{"$schema": "https://c3voc.de/schedule/schema.json", "generator": {"name": "pretalx", "version": "2026.3.0.dev0", "url": "https://pretalx.com"}, "schedule": {"url": "https://pretalx.com/sotm2026/schedule/", "version": "0.7.18", "base_url": "https://pretalx.com", "conference": {"acronym": "sotm2026", "title": "State of the Map 2026", "start": "2026-08-28", "end": "2026-08-30", "daysCount": 3, "timeslot_duration": "00:05", "time_zone_name": "Europe/Paris", "colors": {"primary": "#d81e26"}, "rooms": [{"name": "Guadeloupe", "slug": "5456-guadeloupe", "guid": "78ef51b1-e4b8-57a0-8997-9673e6b46f1c", "description": "Amphi Caquot-Clugnet (Coriolis), https://www.openstreetmap.org/way/1506892344", "capacity": 400}, {"name": "La R\u00e9union", "slug": "5457-la-reunion", "guid": "601df7ca-7aa2-524f-adff-d9a8ad4e085b", "description": "Amphi Bienven\u00fce (Bienven\u00fce), https://www.openstreetmap.org/way/1506892345", "capacity": 244}, {"name": "Martinique", "slug": "5873-martinique", "guid": "d40bad62-cc6f-505a-993c-7b8f2bed1aaa", "description": "Amphi Cauchy (Carnot), https://www.openstreetmap.org/way/1452638610", "capacity": 238}, {"name": "Corse", "slug": "5458-corse", "guid": "2b1b26cd-6a2a-5140-aae0-6cbbddaf7080", "description": "Amphi Picard (Carnot), https://www.openstreetmap.org/way/1506892346", "capacity": 100}, {"name": "Tahiti", "slug": "5459-tahiti", "guid": "aeea882a-de45-5fa2-8ce5-644a52614f62", "description": "P012/Andr\u00e9 Blondel (Carnot), https://www.openstreetmap.org/way/1527330062", "capacity": 100}, {"name": "Porquerolles", "slug": "5462-porquerolles", "guid": "610d031f-7fbf-514b-af0b-31cc7fb9c823", "description": "B004/Auguste Choisy (Carnot), https://www.openstreetmap.org/way/1527330053", "capacity": null}, {"name": "Ouessant", "slug": "5461-ouessant", "guid": "b01b4a06-deca-5239-a85f-0927c1a09e97", "description": "B005/Pierre M\u00e9chain (Carnot), https://www.openstreetmap.org/way/1527330052", "capacity": null}, {"name": "Outdoor Workshops", "slug": "5874-outdoor-workshops", "guid": "d0a1b1fe-9a27-50cb-84a1-703285eec99b", "description": "Workshops", "capacity": null}, {"name": "Online Workshops", "slug": "5460-online-workshops", "guid": "349a33a9-4edd-54d1-9821-cd6dabbce618", "description": null, "capacity": null}], "tracks": [{"name": "OSM Basics", "slug": "6910-osm-basics", "color": "#49EC19"}, {"name": "Community and Foundation", "slug": "6911-community-and-foundation", "color": "#1D91F5"}, {"name": "Mapping", "slug": "6912-mapping", "color": "#DF69CA"}, {"name": "Cartography", "slug": "6913-cartography", "color": "#43CCDF"}, {"name": "Software Development", "slug": "6914-software-development", "color": "#E9ED1C"}, {"name": "Data Analysis & Data Model", "slug": "6915-data-analysis-data-model", "color": "#F6AF23"}, {"name": "User Experiences", "slug": "6916-user-experiences", "color": "#571079"}, {"name": "Education", "slug": "6917-education", "color": "#FF9EB1"}, {"name": "Humanitarian Mapping", "slug": "6918-humanitarian-mapping", "color": "#1E4289"}, {"name": "Lightning Talks", "slug": "6919-lightning-talks", "color": "#058869"}, {"name": "Remote Control", "slug": "6920-remote-control", "color": "#F20928"}, {"name": "Birds of a Feather/BOF Session", "slug": "6921-birds-of-a-featherbof-session", "color": "#5a6400"}, {"name": "Platinum Sponsor Sessions", "slug": "6922-platinum-sponsor-sessions", "color": "#b40000"}], "days": [{"index": 1, "date": "2026-08-28", "day_start": "2026-08-28T04:00:00+02:00", "day_end": "2026-08-29T03:59:00+02:00", "rooms": {"Guadeloupe": [{"guid": "bae2fa8b-dd6e-52b2-90c3-c401f340d50f", "code": "SEDEA8", "id": 98507, "logo": null, "date": "2026-08-28T09:30:00+02:00", "start": "09:30", "end": "2026-08-28T09:50:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-98507-opening", "url": "https://pretalx.com/sotm2026/talk/SEDEA8/", "title": "Opening", "subtitle": "", "track": "Community and Foundation", "type": "Talk", "language": "en", "abstract": "We welcome the OpenStreetMap community in Paris and online to celebrate the international State of the Map conference. This session will also provide some formal instructions and helpful information. You will for example learn how the Q&A (question and answer) sessions are run and what we will do at the social event.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "SNKPLF", "name": "SotM Working Group", "avatar": null, "biography": null, "public_name": "SotM Working Group", "guid": "f6fa5674-5726-564b-8067-4c97aa612977", "url": "https://pretalx.com/sotm2026/speaker/SNKPLF/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/SEDEA8/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/SEDEA8/", "attachments": []}, {"guid": "4e6d6b4d-f90c-569e-93c6-0234cd20defa", "code": "PCMPNK", "id": 96839, "logo": null, "date": "2026-08-28T09:50:00+02:00", "start": "09:50", "end": "2026-08-28T10:20:00+02:00", "duration": "00:30", "room": "Guadeloupe", "slug": "sotm2026-96839-state-of-panoramax", "url": "https://pretalx.com/sotm2026/talk/PCMPNK/", "title": "State of Panoramax", "subtitle": "", "track": "Mapping", "type": "Extended Talk", "language": "en", "abstract": "Panoramax started a few years ago in France, initiated by OpenStreetMap France and IGN.\nThis project is part of the OSM family, because ground level pictures are so useful for OSM mappers.\nThis talk will provide an overview of the project, how it works, the full open-source approach, the decentralization and federation, and will describe the next steps, including the launch of the Panoramax Foundation.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "MVXL7N", "name": "Christian Quest", "avatar": "https://pretalx.com/media/avatars/NUTZMW_W8Zjv0R.webp", "biography": "OSM contributor since 2009, founder of OpenStreetMap France in 2011.\nPart of the team that takes care of OpenStreetMap France servers and several services (for example the french and humanitarian basemaps, uMap, etc.).\n\nInitiator of several project like OpenEventDatabase, opendatArchives, OpenSolarMap... and Minitel museum !\n\nCurrently fully dedicated to the Panoramax project.", "public_name": "Christian Quest", "guid": "05f0d5ac-0f52-5d88-8b53-1c3b993fba42", "url": "https://pretalx.com/sotm2026/speaker/MVXL7N/"}, {"code": "RTVB8V", "name": "Adrien Pavie", "avatar": "https://pretalx.com/media/avatars/D3SN3N_0cdzCx4.webp", "biography": "Adrien has been an OpenStreetMap contributor since 2010 and is specialized in software development for GIS and open data. He has developed tools such as GeoDataMine, YoHours and OpenLevelUp, and is involved in the development of Panoramax. As a freelance entrepreneur and founding member of the Federation of OpenStreetMap Professionals (FPOSM), he promotes OpenStreetMap to a wide range of organizations (local authorities, businesses and associations).", "public_name": "Adrien Pavie", "guid": "133b5baa-2293-54e5-b2ff-f6cbc59bdd57", "url": "https://pretalx.com/sotm2026/speaker/RTVB8V/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/PCMPNK/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/PCMPNK/", "attachments": []}, {"guid": "5fd42080-5920-506a-a61b-a78ff803cece", "code": "EGFGRJ", "id": 96613, "logo": null, "date": "2026-08-28T11:15:00+02:00", "start": "11:15", "end": "2026-08-28T11:35:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-96613-geodesk-the-openstreetmap-toolkit-that-s-fast-easy-and-fun", "url": "https://pretalx.com/sotm2026/talk/EGFGRJ/", "title": "GeoDesk: The OpenStreetMap toolkit that's fast, easy and fun", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "The world is big. So is the global OpenStreetMap dataset -- and it's growing bigger each day. This is great, of course, since OSM is becoming ever more complete and detailed. But working with this data volume requires high-end hardware, SQL skills, and ample patience.\n\nGeoDesk takes a novel approach, with a database engine designed specifically for OSM data, with orders-of-magnitude improvements in import times, storage requirements and query speed. The software is 100% free and open-source and runs on Windows, Linux and macOS, with modest hardware requirements.\n\nIn this talk, I'll cover the basics of the GeoDesk workflows: how to import OSM data and perform basic queries using the command line, and export results in various formats. I will also give an introduction to the three GeoDesk SDKs for Python, Java, and C++. These toolkits allow more sophisticated spatial queries and can be integrated with other popular libraries (e.g. JTS, Shapely, and GEOS) to build full-fledged geospatial applications.\n\nFinally, I will briefly outline the project roadmap for the 3.0 release coming this fall.", "description": "This talk is split into 4 parts:\n\n## Introduction and general concepts\n\nHere, we'll cover [Geo-Object Libraries](https://wiki.openstreetmap.org/wiki/Geo-Object_Library), the single-file database format behind GeoDesk: how it is structured; what makes it so efficient; how it stores nodes, ways, and relations; how it handles areas. Also a quick refresher on map projections, with a focus on the Mercator variant used by GOLs.\n\n## The GOL Tool\n\nThe [GOL Tool](https://docs.geodesk.com/gol) is a cross-platform command-line application. I'll show how to create a GOL from a planet file (or extract in OSM-PBF format); how to download ready-made GOLs; and how to run basic queries and visualize their results.\n\n## Toolkit basics\n\nI'll cover how to work with features, geometries and query result sets, with short examples from the [GeoDesk Python toolkit](https://docs.geodesk.com/python). I'll show how to perform various tag-based and spatial queries, how to convert between different projections, and how to perform advanced geometric operations.\n\n## Advanced toolkit features / roadmap\n\nI'll give a brief intro to the Java and C++ toolkits. I'll also outline what's coming in Version 3.0.\n\nInstead of a live demo, I'll use annotated slides showing detailed inputs and outputs. The purpose of the talk is to give attendees enough background to explore the examples at their leisure, based on the documentation at docs.geodesk.com.\n\nFor more information, please see www.geodesk.com or follow @geodesk@en.osm.town.", "recording_license": "", "do_not_record": false, "persons": [{"code": "CZAMNB", "name": "Martin", "avatar": "https://pretalx.com/media/avatars/JCTZVP_OhMzWS7.webp", "biography": "I like maps. At first, I was content just looking at maps. Then I made my own maps. Then I made tools for making maps. Now I make tools for making map-making tools, as a contributor to GeoDesk.\n\n(I also like brevity, but this field needs 11 more words)", "public_name": "Martin", "guid": "bc701bd5-53f2-5ed7-8f2a-ac6b7f840531", "url": "https://pretalx.com/sotm2026/speaker/CZAMNB/"}], "links": [{"title": "GeoDesk documentation", "url": "https://docs.geodesk.com/", "type": "related"}, {"title": "GeoDesk main website", "url": "https://www.geodesk.com/", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/EGFGRJ/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/EGFGRJ/", "attachments": [{"title": "Slides", "url": "/media/sotm2026/submissions/EGFGRJ/resources/2026-08-24_presen_C4QJ4rw.pdf", "type": "related"}]}, {"guid": "b54acdad-c13d-56cb-9d7f-2e7b3aae31bb", "code": "UHXHDT", "id": 96281, "logo": null, "date": "2026-08-28T11:50:00+02:00", "start": "11:50", "end": "2026-08-28T12:10:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-96281-perspectives-on-editors", "url": "https://pretalx.com/sotm2026/talk/UHXHDT/", "title": "Perspectives on editors", "subtitle": "", "track": "Mapping", "type": "Talk", "language": "en", "abstract": "As main developer of MapComplete, I do think a lot about how people edit OpenStreetMap and how those edits relate to the rest of the data and the rest of the ecosystem.\nAt the same time, there are many OSM-editors out there. While this choice might be a bit confusing for new contributors, the OSM ecosystem thrives by having multiple editors.\n\nIn this talk, I would like to zoom out and give different frameworks and perspectives on how to think about editing software; and how editors relate to each other - they often complement each other.\n\nSome questions I'll answer are:\n\n- how can we compare editors?\n- What makes an editor a good editor? What makes it a powerful editor?\n- How do editors relate to the data they edit?\n- What will the future bring?", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "DSGTTQ", "name": "Pieter Vander Vennet", "avatar": "https://pretalx.com/media/avatars/ZZ9DXT_VNXKQ1u.webp", "biography": "After studying informatics at Ghent University, Pieter was drawn into OpenStreetMap. As freelancer, he developed MapComplete, which aims to be an easy-to-use and topical map viewer and editor. You might find him climbing or cycling somewhere, even though he'll often pause to add something to OSM.\n\nHe worked 5 years for Anyways.eu, creating cycling route planners and mobility analysis software. Right now, he's a teacher at a college", "public_name": "Pieter Vander Vennet", "guid": "4f82596d-5027-5c6d-89e0-6e36bbfa8165", "url": "https://pretalx.com/sotm2026/speaker/DSGTTQ/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/UHXHDT/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/UHXHDT/", "attachments": [{"title": "Export - a bit yanky (images are sometimes spread over 2 pages)", "url": "/media/sotm2026/submissions/UHXHDT/resources/Perspectives_on_e_ScpWRNu.pdf", "type": "related"}]}, {"guid": "7c822588-718e-5684-a0b6-e7f1d1ef0516", "code": "8V7LYM", "id": 97051, "logo": null, "date": "2026-08-28T12:25:00+02:00", "start": "12:25", "end": "2026-08-28T12:45:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-97051-update-on-attribution-enforcement-for-users-of-openstreetmap-servers", "url": "https://pretalx.com/sotm2026/talk/8V7LYM/", "title": "Update on attribution enforcement for users of OpenStreetMap servers", "subtitle": "", "track": "Community and Foundation", "type": "Talk", "language": "en", "abstract": "Turns out that some people not only ignore OpenStreetMap license, but use OpenStreetMap servers to power their license-violating project. At least in such cases license enforcement can become a bit easier: as now their server access can be switched of.\n\nDescription of https://github.com/openstreetmap/tile-attribution project, how it works, how you can help. And what was achieved so far.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "QDST7R", "name": "Mateusz Konieczny", "avatar": null, "biography": "Active OpenStreetMap mapper and contributor to software powering OpenStreetMap. Contributed some minor improvements to multiple editors and significant improvements to StreetComplete and iD.\n\nMapper active since 2013, especially interested in mapping bicycle infrastructure, hiking trails, parks. Mapping using Vespucci, StreetComplete, JOSM, level0, special editing tools and automated edits.\n\nInvolved in improving documentation about existing tagging schemas by contributing to OpenStreetMap Wiki. Active also in inventing new tagging schema where existing ones were insufficient.", "public_name": "Mateusz Konieczny", "guid": "7c5f959a-0d10-588d-805c-895e9977551a", "url": "https://pretalx.com/sotm2026/speaker/QDST7R/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/8V7LYM/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/8V7LYM/", "attachments": [{"title": "slides", "url": "/media/sotm2026/submissions/8V7LYM/resources/Attribution_v1.0_vOZwtFO.pdf", "type": "related"}]}, {"guid": "bfa603c3-8a6d-5736-ad7d-f04e603896f9", "code": "3GRKKJ", "id": 96960, "logo": null, "date": "2026-08-28T14:30:00+02:00", "start": "14:30", "end": "2026-08-28T15:10:00+02:00", "duration": "00:40", "room": "Guadeloupe", "slug": "sotm2026-96960-emergency-services-using-openstreetmap-in-germany", "url": "https://pretalx.com/sotm2026/talk/3GRKKJ/", "title": "Emergency Services using OpenStreetMap in Germany", "subtitle": "", "track": "User Experiences", "type": "Extended Talk", "language": "en", "abstract": "OpenStreetMap is widely used throughout the emergeny services - but this is not well known in the broader OSM community. In this talk, firefighters and emergency service practicioners will give an overview of how they use and contribute to OSM. \n\nWe'll show all scales of OSM integration, from grass roots activities like hydrant mapping to full scale adoption by the entire department for planning, dispatch and emergency vehicle routing.", "description": "[SLIDES HERE](https://pretalx.com/media/sotm2026/submissions/3GRKKJ/resources/sotm26_vfdb_IhVvlgB.pdf)\n\nMost mappers know that the data they add to OSM is occasionally used by emergency services, and this can be very motivating for some. But just how common is OpenStreetMap in the fire and ambulance services? Very! In fact, there aren't many control rooms that _don't_ use OSM, be it just as a background map or even for geocoding, dispatch, and routing. \n\nWe will walk the audience through an incident and highlight how OSM is used at each stage. This example shows the maximum integeration of OSM, which is already state-of-the-art in some departments, but of course not in all \u2248250 fire and ambulance control rooms in Germany. \n\nStarting with the 112 emergency call, geocoding software helps the dispatcher locate the caller by the addresses and POIs that they reference. OSM's strength here is the POI data as well as `old_name` and `loc_name`, important parts of how callers describe where they are but data that is missing from the usual government sources. Locating the caller is the first and often most difficult step of the call, but it is getting easier with the advent of AML. \nIn the next step, a suitable vehicle is selected by routing ETE and then dispatched and routed to the incident. Routing emergency vehicles with lights and sirens is not a trivial task, and commercially available routing graphs lack the ability for customization. OSM is a great road network source here as routing engines can take into account that access, turn restrictions, speed limits and weight limits need to be interpreted differently. Also, we can't avoid traffic jams as the incidents we respond to are usually the ones that created the congestion in the first place.\nAt the scene, many ambulance crews then use OSM to find the exact housenumber and the entrance of a building and fire crews check the location and dimensions of fire hydrants. \n\nWe are a group of emergency service practicioners, mostly from the control room, emergency vehicle routing, and demand planning side of the fire and ambulance services. In this talk, we want to show the other members of the community how we use OSM in our professional and personal lives and how we approach editing and quality assurance.", "recording_license": "", "do_not_record": false, "persons": [{"code": "8AK3P7", "name": "dadavid", "avatar": null, "biography": "Studied rescue engineering at TH K\u00f6ln. Masters Thesis on analysing emergency vehicle trajectory data and generating edge traversal times for emergency vehicle routing. Now living in T\u00fcbingen and working in the field of emergency service routing, dispatch and control room software. Also a volunteer firefighter at Feuerwehr T\u00fcbingen. Member of vfdb e.V. Referat 7.", "public_name": "dadavid", "guid": "61a45863-5c6f-5bf5-a689-f2d607142571", "url": "https://pretalx.com/sotm2026/speaker/8AK3P7/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/3GRKKJ/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/3GRKKJ/", "attachments": [{"title": "presentation slides with image alt text", "url": "/media/sotm2026/submissions/3GRKKJ/resources/sotm26_vfdb_IhVvlgB.pdf", "type": "related"}]}, {"guid": "9b75fa47-fe1a-5b22-9c0c-8482740a1620", "code": "TLGDFF", "id": 96633, "logo": null, "date": "2026-08-28T15:40:00+02:00", "start": "15:40", "end": "2026-08-28T16:00:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-96633-do-maps-have-a-future-in-openstreetmap", "url": "https://pretalx.com/sotm2026/talk/TLGDFF/", "title": "Do maps have a future in OpenStreetMap?", "subtitle": "", "track": "Cartography", "type": "Talk", "language": "en", "abstract": "Maps have been essential in the development and the success of OpenStreetMap.  They were and still are the single most important medium of communication across language and culture gaps between members of the OSM community.\n\nMaps in that role however - as a shared visualization of the work of the mappers, providing an identical picture to everyone viewing them, and this way facilitating communication - seem to be on the way out, at least as far as OpenStreetMap is concerned.  It is not unlikely that in a few years, for better or worse, the only forms of visualization of OSM data most community members will know and use on a daily basis are individualized depictions in the user interfaces of digital tools.\n\nThis talk is going to discuss this development and the social role of maps in OpenStreetMap in its historical context and explain how the OSM community is essentially unprepared for this foreseeable loss of a central means of communication among its contributors.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "7SCYGJ", "name": "Christoph Hormann", "avatar": "https://pretalx.com/media/avatars/XUNS7A_gwjEx6s.webp", "biography": "Christoph Hormann (imagico) is a freelance graphics designer, methodology developer, and consultant specializing in the production of visualizations of the Earth\u2019s surface - ranging from realistic 3D views to traditional maps.  He has been involved in OpenStreetMap since 2013, in particular in map design.  He is a maintainer of [OpenStreetMap-Carto](https://github.com/openstreetmap-carto/openstreetmap-carto), the default map featured on the OpenStreetMap website and regularly writes about map design topics as well as social, organizational and technical matters of significance for the OSM community [on his blog](https://imagico.de/blog/en/).", "public_name": "Christoph Hormann", "guid": "e6711802-993d-5585-a371-601551f3de42", "url": "https://pretalx.com/sotm2026/speaker/7SCYGJ/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/TLGDFF/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/TLGDFF/", "attachments": [{"title": "Presentation", "url": "/media/sotm2026/submissions/TLGDFF/resources/maps_sotm_2026_9tkogxS.pdf", "type": "related"}]}, {"guid": "7abdd1d5-b7ed-52a9-b4c0-284dae247f72", "code": "GCP9RW", "id": 96992, "logo": null, "date": "2026-08-28T16:45:00+02:00", "start": "16:45", "end": "2026-08-28T17:05:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-96992-client-side-transport-maps-on-openstreetmap-org", "url": "https://pretalx.com/sotm2026/talk/GCP9RW/", "title": "Client-Side Transport Maps on OpenStreetMap.org", "subtitle": "", "track": "Cartography", "type": "Talk", "language": "en", "abstract": "With the recent support on openstreetmap.org for Maplibre-based maps, I thought it would be interesting to create a new version of our Transport map styles, to take full advantage of the client-side rendering.\n\nIt wasn't as straightforward as I had hoped! In this presentation I'll discuss what I learned along the way. I'll dig into some of the features and limitations of Maplibre when converting from existing Mapnik styles, and suggest some changes to Maplibre to make future cartographic work easier. I'll also go into the details of some features I added to Glug, the cartographer-friendly stylesheet language that I used for this project.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "Y88VCP", "name": "Andy Allan", "avatar": "https://pretalx.com/media/avatars/77P3N8_LNj9CqF.webp", "biography": "Andy is a long-time OSM mapper, cartographer and developer. He currently volunteers as a software developer and maintainer for the core openstreetmap-website project.\n\nHe also runs Thunderforest, a mapping business that creates reliable, high-quality maps based on OSM data. These maps are used in a wide range of apps and websites, with customers over the world, and are used for cycling, hiking, public transport and more.", "public_name": "Andy Allan", "guid": "a0bbe0d3-65e0-5e51-bfe6-28c5bbd96e23", "url": "https://pretalx.com/sotm2026/speaker/Y88VCP/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/GCP9RW/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/GCP9RW/", "attachments": [{"title": "Presentation Slides", "url": "/media/sotm2026/submissions/GCP9RW/resources/presentation_xtcb3sp.pdf", "type": "related"}]}, {"guid": "26f567f2-612e-5836-8222-2aa7589b1604", "code": "EMMH8Q", "id": 96628, "logo": null, "date": "2026-08-28T17:20:00+02:00", "start": "17:20", "end": "2026-08-28T17:40:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-96628-sourdough-and-layercake-removing-technical-barriers-to-using-osm-data-for-cartography-and-analysis", "url": "https://pretalx.com/sotm2026/talk/EMMH8Q/", "title": "Sourdough and Layercake: removing technical barriers to using OSM data for cartography and analysis", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "This talk presents two projects: Sourdough (a new vector tile schema) and Layercake (thematic extracts of OSM data in cloud-native formats). These projects serve different audiences but have similar design goals: to make it easier for people to use OSM data, reduce accidental complexity in data consumers' workflows, and strengthen feedback loops between OSM data users and the mapping community. I will discuss these design goals in depth, along with the technical decisions each project makes in pursuit of them, and conclude with announcements about new features and future roadmaps for both projects.", "description": "OpenStreetMap's flexible data model is one of the project's greatest strengths, but it's also a barrier to using OSM data. Converting raw OSM data into forms suitable for displaying a map or analyzing with traditional GIS software typically requires writing code, using specialized tools, and having a deep understanding of OSM's nodes/ways/relations data model and tagging conventions.\n\nSourdough and Layercake are two projects I created with the goal of making OSM data easier to use.\n\n- **Sourdough** is a vector tile schema that organizes OSM data into tile layers that directly reflect OSM's tagging conventions, and includes as much data from OSM as possible to support a wide range of cartographic use cases\n- **Layercake** is thematic extracts (buildings, roads, etc) of OSM data in cloud-native file formats, ready to use in software like DuckDB and QGIS\n\nThese two projects serve different audiences, but share a common design philosophy: convert OSM data into ready-to-use formats while staying faithful to OSM's taxonomy and tagging conventions. Doing so reduces accidental complexity for downstream users, while avoiding the creation of new, leaky abstractions. It also creates a strong feedback channel that helps highlight gaps or inconsistencies in OSM's tagging practices so that we as a community can improve it.\n\nThis talk will showcase both projects, discuss the technical decisions that they make in pursuit of these goals, and conclude with announcements about new features and future roadmaps for both.", "recording_license": "", "do_not_record": false, "persons": [{"code": "M7UWHT", "name": "Jake Low", "avatar": "https://pretalx.com/media/avatars/XC9RQP_waZ1rUV.webp", "biography": "I work as a software developer at [OpenStreetMap US](https://www.openstreetmap.us/), a non-profit organization which supports the OSM community in the United States and beyond. I help maintain [OSMCha](https://osmcha.org/) and [MapRoulette](https://maproulette.org/), and various other [open-source projects](https://github.com/osmus).\n\nWhen I'm not writing code, I enjoy hiking and mapping trails. I'm a member of the OSM US [Trails Working Group](https://openstreetmap.us/our-work/trails/), which convenes mappers, land managers, and outdoor app developers to improve the accuracy of trail data in OSM.", "public_name": "Jake Low", "guid": "2a6545ce-0930-5a1b-abba-12faef5abce3", "url": "https://pretalx.com/sotm2026/speaker/M7UWHT/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/EMMH8Q/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/EMMH8Q/", "attachments": []}, {"guid": "5bb34735-ebbe-513e-aae8-05b2c66376a1", "code": "MKKGG9", "id": 96811, "logo": null, "date": "2026-08-28T17:55:00+02:00", "start": "17:55", "end": "2026-08-28T18:15:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-96811-maplibre-from-data-to-rendering-in-one-status-update", "url": "https://pretalx.com/sotm2026/talk/MKKGG9/", "title": "MapLibre - from data to rendering, in one status update", "subtitle": "", "track": "Cartography", "type": "Talk", "language": "en", "abstract": "MapLibre has became one of the critical pillars of open source mapping, including map data transformations, formats, rendering, and interaction on all platforms. You see MapLibre everywhere, from small web sites to giants like Microsoft Bing Maps, from hobby phone apps to the giants like Lyft. New MLT tile format allows smaller faster tiles with new features in 2D and 3D space replacing legacy MVT format. Martin tile server has became the fastest tile server with numerous supported backends, formats, and features. This status update will cover all this and more.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "8J9LYV", "name": "Yuri Astrakhan", "avatar": "https://pretalx.com/media/avatars/8MCDF9_NJzd39k.webp", "biography": "I am a long time open source advocate and contributor in maps and Rust, founder and a board member of MapLibre. Apart from numerous open source projects, I work at Rivian Volkswagen Tech as  a principle engineer leading maps and Rust adaption efforts.  Author of Sophox (OSM graph db), Wikipedia maps, API, and graphs.", "public_name": "Yuri Astrakhan", "guid": "6460094d-9a9c-56fa-b2ba-dc1eed0e8dfb", "url": "https://pretalx.com/sotm2026/speaker/8J9LYV/"}, {"code": "LDXSCY", "name": "Frank Elsinga", "avatar": "https://pretalx.com/media/avatars/FPQKNR_wx9Mqhk.webp", "biography": "Frank Elsinga from the Technical University of Munich is a member of the MapLibre Governing Board. He is actively engaged in advancing open innovation in the field of vector-based map rendering. Through his work, he helps bridge the gap between the open-source MapLibre community, academic research, and public administration, fostering collaboration and enabling the development of more transparent, accessible, and high-performance geospatial technologies.", "public_name": "Frank Elsinga", "guid": "2f2ae80b-53be-5b3d-9f27-0eef09b3ec76", "url": "https://pretalx.com/sotm2026/speaker/LDXSCY/"}], "links": [{"title": "MapLibre Site", "url": "https://maplibre.org/", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/MKKGG9/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/MKKGG9/", "attachments": []}], "La R\u00e9union": [{"guid": "eb275f20-abe6-5a88-857f-0ce11d5b0759", "code": "VS9YKN", "id": 96003, "logo": null, "date": "2026-08-28T11:15:00+02:00", "start": "11:15", "end": "2026-08-28T11:35:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-96003-structuring-road-information-in-open-data-a-nested-wikidata-osm-bd-topo-ign-architecture-co-produced-by-territorial-authorities", "url": "https://pretalx.com/sotm2026/talk/VS9YKN/", "title": "Structuring road information in open data: a nested Wikidata \u2013 OSM \u2013 BD TOPO (IGN) architecture co-produced by territorial authorities", "subtitle": "", "track": "Data Analysis & Data Model", "type": "Talk", "language": "en", "abstract": "Road infrastructure data held by French territorial authorities is rich, authoritative and largely invisible to the open data ecosystem. This talk presents the journey of an active OSM and Wikidata contributor who also works in road information management at municipal, intermunicipal and departmental levels in Southern France. This dual role has led to the design of a coherent, nested open data architecture for road intelligence.\nAt the core lies a data model in which Wikidata acts as the geometric abstraction layer enabling convergence of non-official data sources and multi-database identifiers \u2014 its design encouraging exhaustiveness through sourced statements and a completeness gauge that makes quality progress both visible and rewarding. OpenStreetMap holds the geometric and operational details, while BD TOPO (IGN) serves as the authoritative reference dataset to which both OSM geometries and Wikidata items are systematically cross-referenced and linked. This nesting creates a powerful convergence: the State's national reference, locally produced data from territorial authorities, and their near real-time mirroring through OSM geometry and Wikidata semantics.\nPanoramax street-level imagery feeds both OSM mapping tasks and change detection workflows \u2014 including early experiments with AI-assisted approaches applied to infrastructure monitoring. The presentation covers modelling choices at the Wikidata\u2013OSM interface, automation pipelines that reduce friction between internal road management tools and open data outputs, and practical benefits for road users across GPS and navigation applications.\nThis talk targets contributors interested in Wikidata\u2013OSM integration, open government data processes, and the practical use of street-level imagery for infrastructure maintenance. It will also openly address methodological limits, work organization practices, and current gaps in tools within and around the OpenStreetMap ecosystem \u2014 including possible ways forward, and an honest look at tensions between the pace of field experimentation and the deliberative nature of community consensus.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "JDKUWD", "name": "Jean-Louis ZIMMERMANN", "avatar": "https://pretalx.com/media/avatars/YFLSJJ_e2GCRpB.webp", "biography": "Jean-Louis Zimmermann is a road information manager at the Vaucluse Departmental Council (CD84) in Southern France, where he oversees data quality and enhancement of the departmental road network.\nUrban planner by training, he previously worked in a municipality and intermunicipal authorities, notably as project manager for territorial development and accessibility for people with disabilities. Since 2009, as an active OpenStreetMap contributor (user JLZIMMERMANN) and Wikidata editor, he has conducted numerous experiments and cartoparties to map accessibility (wheelchair, visual, etc.), developing dynamic maps and practical workflows with tools such as Lizmap, Mapillary and Panoramax.", "public_name": "Jean-Louis ZIMMERMANN", "guid": "632d3625-ecd5-52c0-a6c3-7f336dc77546", "url": "https://pretalx.com/sotm2026/speaker/JDKUWD/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/VS9YKN/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/VS9YKN/", "attachments": [{"title": "The support of my talk \"Structuring road information in open data: a nested Wikidata \u2013 OSM \u2013 BD TOPO (IGN) architecture co-produced by territorial authorities\"", "url": "/media/sotm2026/submissions/VS9YKN/resources/PRES_JLZ_road-inf_hyLCUDN.pdf", "type": "related"}]}, {"guid": "295e7204-ba9c-5821-b8e1-49cc1512e4ce", "code": "SMGDU7", "id": 97010, "logo": null, "date": "2026-08-28T11:50:00+02:00", "start": "11:50", "end": "2026-08-28T12:50:00+02:00", "duration": "01:00", "room": "La R\u00e9union", "slug": "sotm2026-97010-the-democratic-stakes-of-mapmaking-a-cross-community-panel", "url": "https://pretalx.com/sotm2026/talk/SMGDU7/", "title": "The democratic stakes of mapmaking: a cross-community panel", "subtitle": "", "track": "Cartography", "type": "Panel", "language": "en", "abstract": "Every map embeds choices: what to show, what to omit, what to centre, who is included as a stakeholder, who decides on the legend. Most of these choices are invisible to the people who use the resulting maps as inputs into their daily lives \u2014 and into democratic decisions, from a local town-planning vote to a national policy debate.\n\nThis panel asks who, and through what processes, should be in charge of those choices, and how communities like OpenStreetMap, official mapping agencies and emerging civic-cartographic movements can collectively raise the democratic stakes of mapmaking.", "description": "Animated by Matthieu Chatry, coordinator of [La R\u00e9publique des Cartes](https://www.republiquedescartes.fr/en) and three panelists from complementary horizons :\n\n- Christian Quest, OSM contributor and community member and currently Product owner of [Panoramax](https://panoramax.fr/) \n\n- Ksenia Ermoshina, researcher at the CNRS, specifically at the [Centre Internet & Soci\u00e9t\u00e9](https://cis.cnrs.fr/en/). She works on numerous projects concerning digital practices and related democratic issues. [More about Ksenia Ermoshina](https://cis.cnrs.fr/ksenia-ermoshina/)\n\n- Fran\u00e7oise Bahoken is a geography researcher at Gustave Eiffel University. Her work focuses particularly on the theoretical and methodological aspects of mapping the flows and movements observed in geographic space. [More about Fran\u00e7oise Bahoken](https://cv.hal.science/francoise-bahoken)\n\nThe discussion will explore:\n- Map-making as a civic act: when is mapping a form of citizenship, and what would it take for map-reading to become one too?\n\n- The role of national mapping agencies in opening up their data, infrastructure and methods to civil society - what to expect \n\n- The OSM model as a democratic experiment: its strengths, its limits, its blind spots, and what it could learn from other community-cartography traditions (counter-cartography, indigenous mapping, popular-education mapping).", "recording_license": "", "do_not_record": false, "persons": [{"code": "REEXFC", "name": "Matthieu Chatry", "avatar": "https://pretalx.com/media/avatars/DSVGBC_fQwBEiM.webp", "biography": "Matthieu Chatry coordinates La R\u00e9publique des Cartes at IGN, the French national mapping agency. His real craft, though, is the animation of learning communities. For the past decade - first with [leChaudron.io](url), then as an independent facilitator under the [Amuseurs](url) name, he has designed workshops and built communities of practice to help people of all backgrounds build a confident, hands-on relationship with digital tools and most recently generative AI. \nHe now brings the same approach to maps: animating the coalition of partners and organisers behind  La R\u00e9publique des Cartes.", "public_name": "Matthieu Chatry", "guid": "ea873dc2-8a3a-513b-9a43-cdda9d3ff406", "url": "https://pretalx.com/sotm2026/speaker/REEXFC/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/SMGDU7/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/SMGDU7/", "attachments": []}, {"guid": "6f3b6a97-66f4-5150-8dd8-9aadc4f2f925", "code": "WJFRPV", "id": 96846, "logo": null, "date": "2026-08-28T14:30:00+02:00", "start": "14:30", "end": "2026-08-28T14:50:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-96846-announcing-maproulette-4", "url": "https://pretalx.com/sotm2026/talk/WJFRPV/", "title": "Announcing MapRoulette 4!", "subtitle": "", "track": "Mapping", "type": "Talk", "language": "en", "abstract": "[MapRoulette](https://maproulette.org/) is a micro-task platform for OpenStreetMap. Thousands of mappers use MapRoulette every month to find small but meaningful fixes to the map: a building that crosses a road, a business with an invalid phone number, a river that flows the wrong way. Each task is designed to be quick to fix and easy to understand. There are tasks for all mapper experience levels and for almost every country in the world. MapRoulette is a community-driven platform: anyone can create tasks using an easy-to-use interface. In 2025 alone, mappers made around 700'000 map improvements using MapRoulette!\n\nBehind the scenes, we have been working on a completely new version of the MapRoulette website and the API. The new website is easier to navigate, has a modern design, and a much improved search function. The map views have been overhauled to show a lot more relevant information. After a period of community feedback, we released MapRoulette v4 earlier this year. In this presentation, MapRoulette creator Martijn van Exel will show you around the new version, talk about plans for the future, and explain how to integrate your application with the MapRoulette API.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "8LQ8JQ", "name": "Martijn van Exel", "avatar": "https://pretalx.com/media/avatars/SG9NNL_fmsR9Si.webp", "biography": "Martijn joined OSM way back in 2007, when the only way to map was to bike around the city with a GPS device an pen and paper. He still prefers survey mapping above everything else. Martijn has been involved in the community as a mapper, software developer and community organizer ever since. He has been on the OSMF Board of Directors and the OSM US Board of Directors. Martijn is also involved in the geospatial world as a professional, having worked at companies like TomTom, HERE and Meta. He currently lives in Salt Lake City, Utah, USA.", "public_name": "Martijn van Exel", "guid": "44c1eff2-2835-5636-a763-7733f8598385", "url": "https://pretalx.com/sotm2026/speaker/8LQ8JQ/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/WJFRPV/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/WJFRPV/", "attachments": []}, {"guid": "0c17e1cc-0cd1-532a-af8a-667830d9d281", "code": "83LBSJ", "id": 96449, "logo": null, "date": "2026-08-28T15:05:00+02:00", "start": "15:05", "end": "2026-08-28T15:25:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-96449-from-openstreetmap-apis-to-insightful-data-analysis-extraction-analysis-and-mapping-with-r", "url": "https://pretalx.com/sotm2026/talk/83LBSJ/", "title": "From OpenStreetMap APIs to Insightful Data Analysis: Extraction, Analysis, and Mapping with R", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "Alongside the enrichment of the OpenStreetMap database over the years, numerous tools have been developed to interact with or to create derivative products: editors, data extraction tools, geocoding services, slippy maps, or routing engines.\u00a0Most of these tools are accessible via scripting languages through APIs or dedicated libraries. Among these languages, R stands out as a free and open source programming language and software for statistical computing and data visualization. Complemented by more than 23,500 user-contributed packages hosted on the Comprehensive R Archive Network in 2026, the language\u2019s versatility allows users to build unified workflows within an environment conducive to reproducible research. R is widely used for research purposes in many fields beyond statistics, such as biology, social sciences, or geomatics. A subset of its packages forms a robust and mature spatial ecosystem that makes it easy to handle and display spatial data. Consequently, R provides seamless access to various APIs and tools for downloading and filtering OpenStreetMap data, querying shortest routes and itineraries, or generating both static and interactive maps. \n\nAs part of our research activities, we have developed some of the key OpenStreetMap-related R packages. For example, the _osrm_ package has enabled the integration of time-distance calculations in many academic studies by providing a straightforward access to the OSRM routing engine. The package has been widely used in numerous published papers across various disciplines (health, transport, environmental science, or education). Thus, we argue that R enables researchers to efficiently use OpenStreetMap thanks to a unified and reproducible environment and specialized packages.\n\nIn this presentation, we first explore a curated selection of R packages designed to interact with the OpenStreetMap database. We begin with packages that download and extract data, such as _osmextract_ and _osmdata_. Then, we explore solutions that interface third party softwares for geocoding (Nominatim with _tidygeocoder_) and routing (OSRM with _osrm_, Valhalla with _valh_). Finally, we address dynamic cartography (using _leaflet_) and creation of static maps from raster tiles (using _maptiles_) or from vector objects (using _maposm_). \n\nTo illustrate the practical application of these tools, we conclude with a short, seamless and fully reproducible example. From the geocoding of an address, to the extraction of amenities or the use of routing engines and till the creation of a publication-ready map, we propose a complete workflow that harness the power of R ecosystem to create insightful analysis from OpenStreetMap data.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "MEJCCD", "name": "Louis Laurian", "avatar": null, "biography": "I am a GIS engineer for the French National Centre for Scientific Research (CNRS), working mainly with the R language. One of my main research field is spatial accessibility, for which I use OSM as data source for routing engine. I also give statistic and geomatic courses at the university, at Master level.", "public_name": "Louis Laurian", "guid": "e573ab16-4edb-5f92-96f1-deff43a407f2", "url": "https://pretalx.com/sotm2026/speaker/MEJCCD/"}], "links": [{"title": "link to the slides", "url": "https://riatecom.github.io/R_OSM_SOTM_2026/", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/83LBSJ/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/83LBSJ/", "attachments": []}, {"guid": "0bb87267-d319-5b72-9e30-2f0d7bb8ff6b", "code": "CYVSG9", "id": 97012, "logo": null, "date": "2026-08-28T15:40:00+02:00", "start": "15:40", "end": "2026-08-28T16:00:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-97012-osmpid-a-persistent-id-specification-and-an-object-identity-service", "url": "https://pretalx.com/sotm2026/talk/CYVSG9/", "title": "OSMPID: A Persistent ID Specification and an Object Identity Service", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "As OpenStreetMap matures, volatile IDs hinder data integration. We propose the OSM Persistent ID Specification (OSMPID) to provide stable references for developers, the tourism sector, Wikidata and others. Serving as a community-driven alternative e.g. to the GERS-ID, we introduce an HTTP-based Object Identity Service prototype. This talk outlines the technical roadmap to empower reliable, long-term applications built on integrated open OSM location data.", "description": "After years of sporadic discussions and as OpenStreetMap (OSM) reaches new levels of maturity, it is time for the community to discuss a standardized identifier that goes beyond the usual OSM_ID with the node, way, and relation elements. To tackle this challenge, we are introducing the \"OSM Persistent ID Specification\" (OSMPID). This specification provides a stable reference to OSM objects, even when dealing with edge cases of the OSM data structure.\n\nIdentifiers like OSMPID are useful for software developers, the tourism sector, Wikidata, and other users  aiming to integrate OSM-derived data into their workflows using permanent identifiers. The OSMPID serves as a robust, community-driven alternative to proposals like GERS-ID from Overture Maps.\n\nThis talk will also present an HTTP-based Object Identity Service prototype that tracks and signals changes to referenced OSM objects. We will outline the technical specifications and roadmap for a service that will empower developers and users to build reliable, long-term applications within the OSM ecosystem. Finally, the discussion about identifiers underscores the need for OSM to provide a foundation for up-to-date point-of-interest (POI/Places) and location data that is open, up-to-date, and easily integrable.", "recording_license": "", "do_not_record": false, "persons": [{"code": "YVPTW7", "name": "Stefan Keller", "avatar": "https://pretalx.com/media/avatars/EM9MWR_au9N2h9.webp", "biography": "Stefan Keller is Full Professor and Director of the Geometa Lab at the Eastern Switzerland University of Applied Sciences (OST), Switzerland, Campus Rapperswil. He teaches data engineering, database systems and data analytics as well as GISTech. He is involved in open source and open data projects. He is a member of the Swiss PostgreSQL Users Group and the Swiss OpenStreetMap Association, among others.", "public_name": "Stefan Keller", "guid": "bb984721-b29a-5ae9-aaae-ecc989f52e9d", "url": "https://pretalx.com/sotm2026/speaker/YVPTW7/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/CYVSG9/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/CYVSG9/", "attachments": [{"title": "My slides", "url": "/media/sotm2026/submissions/CYVSG9/resources/SOTM2026_Talk_Ste_pS3AgmD.pdf", "type": "related"}]}, {"guid": "84d4f3f6-45be-554e-8de3-5a32afd7b3fe", "code": "UQF7NY", "id": 96895, "logo": null, "date": "2026-08-28T16:45:00+02:00", "start": "16:45", "end": "2026-08-28T17:05:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-96895-mapterhorn-terrain-and-imagery", "url": "https://pretalx.com/sotm2026/talk/UQF7NY/", "title": "Mapterhorn Terrain and Imagery", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "Government agencies collect and share digital terrain models and aerial imagery as open data. Terrain and aerial imagery are often used as background below OpenStreetMap vector data on interactive web maps. But so far, only commercial actors have aggregated open terrain and aerial imagery datasets at scale into a unified data product. The Mapterhorn project aims to bring together all available open terrain and aerial imagery data in one place and share it free of charge as PMTiles downloads. In this talk, we will first have a look at the terrain pipeline which was applied to more than 15 TiB of raster elevation data. We will then look into how the aggregated terrain PMTiles can be used in applications. Finally, we will discuss the ongoing efforts to extend the existing terrain pipeline to aerial imagery.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "7TXNWU", "name": "Oliver Wipfli", "avatar": "https://pretalx.com/media/avatars/ELXNMN_IuF39FC.webp", "biography": "Oliver Wipfli has a background in Physics and learnt about web maps when building a hot-air balloon tracker in 2019. Ever since then the passion for creating maps has grown. He created vector tiles with the first versions of Planetiler, helped build the MapLibre organization, and is now focusing mostly on raster assets such as terrain models and aerial imagery. Oliver works as an independent consultant in the maps and location tech industry.", "public_name": "Oliver Wipfli", "guid": "8a1af73a-bc20-57a7-a1e0-e374d9ee3c67", "url": "https://pretalx.com/sotm2026/speaker/7TXNWU/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/UQF7NY/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/UQF7NY/", "attachments": []}, {"guid": "3c6fa4ab-59c1-5053-9c6b-23d3713959ee", "code": "HVPZWK", "id": 94001, "logo": null, "date": "2026-08-28T17:20:00+02:00", "start": "17:20", "end": "2026-08-28T17:40:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-94001-cartes-app-is-now-international", "url": "https://pretalx.com/sotm2026/talk/HVPZWK/", "title": "Cartes.app is now international", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "In Lyon's State of the Map France 2024, cartes.app was pitched : a French libre Web alternative to Google Maps built on OSM (among lots of free sources). \n\nWe're now proud to show the internationalised version of cartes.app. The interface is translated, the map place names too thanks to an automated full planet tiles generation, as well as the transport itineraries made available outside of France. \n\nLots of new features have landed apart from i18n, we'll demo them and talk about the future of the initiative.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "CFSXPJ", "name": "Ma\u00ebl THOMAS-QUILL\u00c9V\u00c9R\u00c9", "avatar": "https://pretalx.com/media/avatars/AVR379_JKYtxjq.webp", "biography": "Actif sur les sujets des cartes, la mobilit\u00e9, le climat, l'\u00e9nergie. \n\n> Working on maps, mobility, climate, energy.\n\nD\u00e9veloppeur pour beta.gouv.fr depuis 10 ans, o\u00f9 j'ai pu contribuer au lancement de mon-entreprise.fr, Comobi, nosgestesclimat.fr, publi.codes et mesaidesreno.beta.gouv.fr. Je travaille maintenant \u00e0 plein temps cartes.app. \n\n> I've been working for the French gov for 10 years as a developer, launched multiple well know websites. Now working fully on cartes.app.  \n\nhttps://bsky.app/profile/mael.kont.me", "public_name": "Ma\u00ebl THOMAS-QUILL\u00c9V\u00c9R\u00c9", "guid": "ac0d15f0-0660-5abf-8a0c-7d863b736a21", "url": "https://pretalx.com/sotm2026/speaker/CFSXPJ/"}], "links": [{"title": "Slides as Web page", "url": "https://cartes.app/sotm26", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/HVPZWK/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/HVPZWK/", "attachments": []}, {"guid": "3b78dcba-8941-5247-a786-2a0a294d0b6a", "code": "GJWH7J", "id": 97035, "logo": null, "date": "2026-08-28T17:55:00+02:00", "start": "17:55", "end": "2026-08-28T18:15:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-97035-state-of-openhistoricalmap-mapping-the-world-s-history-openly", "url": "https://pretalx.com/sotm2026/talk/GJWH7J/", "title": "State of OpenHistoricalMap: mapping the world's history, openly", "subtitle": "", "track": "Education", "type": "Talk", "language": "en", "abstract": "It has been more than a decade since OpenHistoricalMap was last presented at State of the Map. In that time, the project has grown into a major platform for mapping the history of the world: cities as they evolve, infrastructure that no longer exists, changing landscapes, shifting borders, and many other layers of time. We are collecting it together in one place, as open data, in a spirit of cooperation.\n\nIn this talk we want to share where OpenHistoricalMap is today: what has been mapped so far, how people contribute, the tools that make historical mapping possible, and the projects that are building on top of OpenHistoricalMap data. We will go through real examples of historical mapping happening around the world, the workflows mappers are using and showcases, and the changes we made to the editors and tooling so they work for OHM and not only OSM.\n\nWe close with where the project is going next, how new contributors can get involved, and how the wider OSM community can support historical mapping going forward.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "W7JADM", "name": "Ruben Lopez Mendoza", "avatar": "https://pretalx.com/media/avatars/B9AV93_Ah5RPMy.webp", "biography": "Rub21( Ruben) has been an active OpenStreetMap contributor for over a decade, mapping and building tools for JOSM and OSM data processing. He is currently working on improving the GPS traces infrastructure in OpenStreetMap, and also helps maintain the infrastructure and tooling behind OpenHistoricalMap. He is part of the LatAm OSM community and has been involved in supporting open mapping projects across the region for many years.", "public_name": "Ruben Lopez Mendoza", "guid": "0d1c02b7-25d9-5f77-9059-a7f071f6b49e", "url": "https://pretalx.com/sotm2026/speaker/W7JADM/"}, {"code": "TNB9QM", "name": "Minh Nguy\u1ec5n", "avatar": "https://pretalx.com/media/avatars/FGMQNF_IPbsA3V.webp", "biography": "Minh is a longtime mapper and community organizer for OpenStreetMap and OpenHistoricalMap, focusing on the United States. On a typical day, you can find him roaming the streets of Silicon Valley, looking for quirky things to add to both maps. He serves as the OpenStreetMap Foundation\u2019s Core Software Development Facilitator, thanks to an investment from the Sovereign Tech Fund. He also volunteers as a member of the Software Dispute Resolution Panel, administrator of the OpenStreetMap Wiki, and advisor to OpenHistoricalMap.", "public_name": "Minh Nguy\u1ec5n", "guid": "ec23ecb0-97cf-563c-bce3-88f6186ba8e4", "url": "https://pretalx.com/sotm2026/speaker/TNB9QM/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/GJWH7J/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/GJWH7J/", "attachments": [{"title": "Slides", "url": "/media/sotm2026/submissions/GJWH7J/resources/state-of-openhist_U6POf0f.pdf", "type": "related"}]}], "Martinique": [{"guid": "d235ed7c-0958-5cbc-9e5a-6cfbad1b4a82", "code": "K8XYAN", "id": 96977, "logo": null, "date": "2026-08-28T11:15:00+02:00", "start": "11:15", "end": "2026-08-28T11:35:00+02:00", "duration": "00:20", "room": "Martinique", "slug": "sotm2026-96977-sneaking-in-osm-data-into-a-big-old-company", "url": "https://pretalx.com/sotm2026/talk/K8XYAN/", "title": "Sneaking in OSM data into a big old company", "subtitle": "", "track": "User Experiences", "type": "Talk", "language": "en", "abstract": "SNCF R\u00e9seau is the railway infrastructure manager of France. Culturally in this big (53 000 employees), old (founded in 1938 to nationalize pre-existing railway companies) company, geographic and open data is little well known nor used. \nWe replaced outdated internal data with OpenStreetMap\u2019s railway track data (and not only as a base layer!). In this talk, we will tell you how we pulled this off.", "description": "Our strategy was to very gradually expose our users to OpenStreetMap data, to convince them of its quality. First in cartographic layers without interaction with our data, then by replacing missing data in our internal database, and eventually by fully replacing it as a geographical data source.\nWe contributed to OSM\u2019s railway tracks data in France (which was already in a very high quality thanks to OSM\u2019s community) and use the Clearance tool to monitor its quality.\nWe use this railway track data in libLRS and OSRD, two open-source projects developed by SNCF R\u00e9seau that need geographic representation of railway infrastructure.\nTo compensate for the current lack of open data describing railway signals and stations, we also developed a tool that, based on OSM data, fills in the gaps automatically with realistic objects and allows our projects to run in a demonstration environment in any place of the world.\nOur next step is to convince other projects inside the company to use this data source and contribute to enhance it!", "recording_license": "", "do_not_record": false, "persons": [{"code": "CG88YU", "name": "C\u00e9line DURUPT", "avatar": "https://pretalx.com/media/avatars/YLHKXL_jZAMVnN.webp", "biography": "I am an open data expert, working at SNCF (the french railway company) for 10 years on OSM-related  software projects. \nI am currently working on OSRD (osrd.fr), an open-source web application for railway infrastructure design, capacity analysis and timetabling. In OSM, I am interested in railway infrastructure description data (tracks, signals, stations, electrification, speed limits, milestones...).", "public_name": "C\u00e9line DURUPT", "guid": "2ceea6c4-79d6-5d4c-a89f-3797a770620f", "url": "https://pretalx.com/sotm2026/speaker/CG88YU/"}, {"code": "JWEBMD", "name": "Tristram Gr\u00e4bener", "avatar": null, "biography": "I am a irregular contributor to OpenStreetMap since 20 years.\nProfessionally I am a developer and often work on transportation data, and more specifically with public transit.\nI developed tools to be able to use OSM for simple routing algorithms https://github.com/rust-transit/osm4routing2/ and for linear referencing systems https://github.com/OpenRailAssociation/liblrs", "public_name": "Tristram Gr\u00e4bener", "guid": "13756bb9-9476-535d-83e1-cc1a6b19e6bb", "url": "https://pretalx.com/sotm2026/speaker/JWEBMD/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/K8XYAN/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/K8XYAN/", "attachments": []}, {"guid": "312b0781-b4ae-5d4e-9258-e2cad78bead3", "code": "JDCVGM", "id": 96725, "logo": null, "date": "2026-08-28T11:50:00+02:00", "start": "11:50", "end": "2026-08-28T12:10:00+02:00", "duration": "00:20", "room": "Martinique", "slug": "sotm2026-96725-one-region-40-000-bus-stops-an-osm-map-at-every-one", "url": "https://pretalx.com/sotm2026/talk/JDCVGM/", "title": "One region. 40,000 bus stops. An OSM map at every one.", "subtitle": "", "track": "Cartography", "type": "Talk", "language": "en", "abstract": "Producing a single map targeted at public transport users might be straightforward... but what if you had to produce a hundred? Or a thousand? Or **35,000**..? All of them adhering to high standards of quality and consistency, while also ensuring they are up-to-date, across Europe's most extensive public transport network?\n\nAnd what if open data could play a vital role?\n\nDiscover how \u00ab **plans de proximit\u00e9** \u00bb (location-specific area maps) are designed, produced and maintained for bus and tram stops across the entire Paris region.", "description": "**T-Kartor** is a Swedish cartographic agency, behind some of the best known pedestrian mapping systems - _Legible London_, _WalkNYC_, _Toronto TO360_. We've been working with **\u00cele-de-France Mobilit\u00e9s** on a production system for \u00ab plans de proximit\u00e9 \u00bb, a vital, stop-specific, map-based aid to the millions of users of across the Paris region's transport network.\n\nThis talk will be a speed-run through this project, from context to build to deployment to maintenance. We'll dive into our process, from editing OSM data to delivering print-ready files to transport operators, touching on dozens of in-between steps, and reflecting on lessons learned and where we may go next.\n\nThroughout this effort, T-Kartor has been accompanied by proud (and local!) OSM stalwarts **Jungle Bus**.\n\nWe still believe in printed maps! And, hopefully, by the end of our talk, so will you!", "recording_license": "", "do_not_record": false, "persons": [{"code": "TJVLBP", "name": "Sergio Luke", "avatar": "https://pretalx.com/media/avatars/YXT3PA_1NelEW1.webp", "biography": "With over 20 years of front-line customer information delivery for transport and city networks across the globe, Sergio is a fully paid-up member of the club that still believes in the influential power of a good map. Sergio is currently a Principal Advisor at T-Kartor, where he continues his focus on a well-designed, well-executed information strategies as a key component in any transport or city authority\u2019s relationship with it\u2019s service users.", "public_name": "Sergio Luke", "guid": "b3ee1d07-90c6-52bb-ae38-315411bdb662", "url": "https://pretalx.com/sotm2026/speaker/TJVLBP/"}, {"code": "WAM9JE", "name": "Florian Lainez", "avatar": null, "biography": null, "public_name": "Florian Lainez", "guid": "7cc626d2-bdc0-5987-9266-dbd823162254", "url": "https://pretalx.com/sotm2026/speaker/WAM9JE/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/JDCVGM/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/JDCVGM/", "attachments": [{"title": "\u00cele-de-France Mobilit\u00e9s plan de proximit\u00e9 : Valenton C1", "url": "/media/sotm2026/submissions/JDCVGM/resources/PlanProx_Valenton_uPeeU4k.pdf", "type": "related"}]}, {"guid": "abef1c79-84f6-5a1d-be2f-6f0ef146da97", "code": "TV9DUV", "id": 96984, "logo": null, "date": "2026-08-28T12:25:00+02:00", "start": "12:25", "end": "2026-08-28T12:45:00+02:00", "duration": "00:20", "room": "Martinique", "slug": "sotm2026-96984-openstreetmap-on-board-how-we-fit-europe-into-300-high-speed-trains", "url": "https://pretalx.com/sotm2026/talk/TV9DUV/", "title": "OpenStreetMap on Board: How We Fit Europe into 300 High-Speed Trains", "subtitle": "", "track": "Cartography", "type": "Talk", "language": "en", "abstract": "How do you deliver smooth, detailed mapping to millions of passengers aboard French TGV trains while working within tight storage and server resource constraints? This talk traces the journey of renewing the mapping system for the WiFi portal on board the TGV fleet (300 train sets).\n\nWe will explain our choice of PMTiles technology to move to vector tiles without relying on a heavy cartographic server. We will share our research into data size optimization \u2014 from studying the impact of building footprints to managing zoom levels \u2014 and walk through the trade-offs required to ship a complete European base map on board. Finally, we will cover the specific work done on railway data (routes, diversion paths) and the custom design created to give passengers an immersive experience at 300 km/h.", "description": "1. The Context: An On-Board Server Under Constraints\n\n   The TGV WiFi portal runs on an embedded server with shared resources.\n   - The challenge: No dedicated cartographic server \u2014 we needed an ultra-lightweight \"static\" solution.\n   - The constraint: Limited disk space to store data covering all of Europe, requiring careful thought about the size of every feature.\n\n2. The Technical Solution: PMTiles and a Lightweight Architecture\n\n   Why PMTiles (Protomaps)?\n   - Direct file reading with no complex cartographic backend.\n   - Easy deployment and updates across 300 independent train sets.\n\n3. Size Study: Balancing Richness and Lightness\n\n   This is the heart of our experience report. We ran extensive tests to reduce the size of the European file:\n   - The weight of buildings: Analysis of the savings achieved by removing building footprints (which account for the majority of vector layer file size).\n   - Zoom level management: How far down can we go without losing value for the passenger?\n   - The final decision: Why, despite our reduction tests, we ultimately chose to keep buildings and high zoom levels to prioritize user experience \u2014 and how we optimized everything else.\n\n4. Making the Most of Railway Data\n\n   A TGV map should, above all, speak the language of rail. We integrated specific datasets:\n   - Railway data file: A focus on rail infrastructure sourced from OSM.\n   - Full TGV route coverage: Integration of high-speed lines as well as conventional lines and diversion routes for incident management.\n\n5. Design and Outlook\n\n   - Custom styles: Three bespoke styles developed in line with the client's visual identity guidelines.\n   - 3D exploration: A presentation of our exploratory work to integrate 3D rendering into the on-board map display.", "recording_license": "", "do_not_record": false, "persons": [{"code": "FJ8BSZ", "name": "Benjamin Demonet", "avatar": "https://pretalx.com/media/avatars/R3GMP7_2VmKetW.webp", "biography": "Graduate as an engineer in information technology, industrial production and human-machine interfaces, I have been working since 2012 across various organizations, all with a common goal: to create technical solutions that meet real needs in the most effective way possible, considering their social and environmental impacts.\n\nAs Developer and Product Owner, I'm also sustainable IT lead. I recently joined a team and embarked on a new venture centered on a digital mapping product based on OSM (Tesmo Maps), to provide sustainable and independent solution to the mapping needs of the SNCF group.", "public_name": "Benjamin Demonet", "guid": "4e78ff4b-ba3e-5bfc-af29-7bae37500551", "url": "https://pretalx.com/sotm2026/speaker/FJ8BSZ/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/TV9DUV/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/TV9DUV/", "attachments": [{"title": "Slide deck", "url": "/media/sotm2026/submissions/TV9DUV/resources/SOTM_2026_-_How_w_0XFqnN3.pdf", "type": "related"}]}, {"guid": "46884566-a0b0-5b48-97c7-9a5a1ed832e5", "code": "93XYRL", "id": 96756, "logo": null, "date": "2026-08-28T14:30:00+02:00", "start": "14:30", "end": "2026-08-28T14:50:00+02:00", "duration": "00:20", "room": "Martinique", "slug": "sotm2026-96756-lost-in-hospital-openstreetmap-to-the-rescue", "url": "https://pretalx.com/sotm2026/talk/93XYRL/", "title": "Lost in hospital? OpenStreetMap to the rescue", "subtitle": "", "track": "User Experiences", "type": "Talk", "language": "fr", "abstract": "Hospital campuses can be overwhelming\u2014especially in stressful situations where finding the right department quickly really matters. In collaboration with a major French hospital, we built an application powered by OpenStreetMap that brings together mapping, medical directories, accessibility data, event management and multimodal routing to guide users seamlessly to their destination. In this talk, we\u2019ll share the functional, technical, and organizational challenges behind turning complex hospital environments into clear and accessible navigation experiences.", "description": "A key challenge was enabling hospital teams to independently manage and update the app on a daily basis. We designed a dedicated back-office tailored to non-technical users, making it easy to maintain data, services, and events. At the same time, we stayed true to our initial ambition: engaging the hospital in a collaborative approach to sharing and opening its data.", "recording_license": "", "do_not_record": false, "persons": [{"code": "Y7RFQQ", "name": "Daphn\u00e9 Lercier", "avatar": "https://pretalx.com/media/avatars/RRBFWR_rrt2Gvp.webp", "biography": "As a researcher and innovation manager at Makina Corpus, I was first introduced to OpenStreetMap during my studies at ENSG, now known as Geodata-Paris. Today, I develop projects that combine geospatial data with social issues, particularly in the areas of pedestrian accessibility, sustainable water management, and land-use planning.", "public_name": "Daphn\u00e9 Lercier", "guid": "26b5488a-e7b8-5d17-9405-2776c296241a", "url": "https://pretalx.com/sotm2026/speaker/Y7RFQQ/"}, {"code": "KHQLVT", "name": "Lonny Loquesol", "avatar": null, "biography": null, "public_name": "Lonny Loquesol", "guid": "8b58997f-b222-50a5-98e9-2ba6b84147e4", "url": "https://pretalx.com/sotm2026/speaker/KHQLVT/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/93XYRL/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/93XYRL/", "attachments": []}, {"guid": "a06970e0-ad77-5a2b-947a-6772c5ce33d1", "code": "33VMB8", "id": 96753, "logo": null, "date": "2026-08-28T15:05:00+02:00", "start": "15:05", "end": "2026-08-28T15:25:00+02:00", "duration": "00:20", "room": "Martinique", "slug": "sotm2026-96753-publishing-14-000-businesses-to-openstreetmap-how-community-feedback-reshaped-our-publisher", "url": "https://pretalx.com/sotm2026/talk/33VMB8/", "title": "Publishing 14,000 Businesses to OpenStreetMap: How Community Feedback Reshaped Our Publisher", "subtitle": "", "track": "Mapping", "type": "Talk", "language": "fr", "abstract": "Digitaleo publishes business information to OSM for ~14,000 French points of sale, on behalf of the owners themselves. We took the activity back in-house in early 2026 after issues with a previous provider. This talk is a REX on eight months of organised editing done in public: how a forum thread with the French OSM community reshaped our publisher addr:* vs contact:*, SIRET adoption, social media URL reclassification, disused handling and why \"fix the process, not the POI\" changed our engineering.", "description": "Digitaleo is a French local marketing SaaS. Among other things, we let business owners and network managers update their point-of-sale information name, opening hours, address, phone, payment methods, social media and publish it simultaneously to Google Business Profile, Apple Business Connect, Bing Places, Facebook, and OpenStreetMap. We cover roughly 14,000 POIs across France.\n\nUntil late 2025, our OSM publishing was delegated to an external provider. Community feedback on that provider's edits was mixed (see the French forum thread Votre avis sur un contributeur votre_solution_de_visibilite_digitale_locale). In January 2026, we rebuilt the integration in-house, with a clear goal: do organised editing properly, in the open, with the community.\n\n**What this talk is about**\nThis is a REX on eight months of running that publisher. It's aimed at three audiences: other companies considering organised editing, OSM contributors curious about what happens \"on the other side\" of a corporate editing account, and developers interested in the engineering trade-offs.\n\nArchitecture in one slide. Not a bot: each edit is triggered by one explicit action from a business owner. Data is first-party (not scraped, not from third-party DBs). One multi-publishing action \u2192 N platforms, OSM included only if the user opts in per POI.\n\nSafeguards. What the publisher does not do: no deletions, no geometry changes, no overwriting of primary classification tags set by contributors, no auto-creation by default, no =no values. Optimistic concurrency on element version. A 2-hour sync check that detects external changes but refuses to auto-revert them.\n\nThe heart of the talk: five forum threads that rewrote our code. Each one is a real exchange on the French OSM forum that turned a specific POI-level complaint into a systemic change in the publisher:\naddr:* vs contact:* addresses the community pushed us to default to contact:* everywhere, with conditional logic on pre-existing addr:* elements.\n\nSocial media URLs ending up in website now automatically reclassified to the correct contact:* tag.\nSIRET adoption (ref:FR:SIRET).\n\nHandling closed businesses via the disused: lifecycle prefix, instead of leaving stale data in place.\n\nURL validation: quotidian monitoring of declared websites to flag broken links before and after publication.\n\n**The principle that came out of it: \"fix the process, not the POI.\"** A single complaint is an opportunity to correct the system upstream so the same class of problem can't repeat. That philosophy, more than any technical decision, is what I'd like other organised editors to take away.\n\nNumbers & limits. What we've published, what we've had to manually repair, where the approach breaks down, and what we haven't solved yet (handoff between businesses at the same address, for instance).", "recording_license": "", "do_not_record": false, "persons": [{"code": "FUEBQX", "name": "Digitaleo", "avatar": null, "biography": "Digitaleo is a SaaS platform that enables businesses to manage their online presence across multiple directories.\n\nWhen a business owner updates their point-of-sale information on Digitaleo, the changes are automatically published to OpenStreetMap via the API. Each edit corresponds to a single user action  this is not an autonomous bot.", "public_name": "Digitaleo", "guid": "9163db21-6e01-51ac-8507-d9580d436bf7", "url": "https://pretalx.com/sotm2026/speaker/FUEBQX/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/33VMB8/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/33VMB8/", "attachments": []}, {"guid": "95d46528-69ae-5dad-8bc6-fe219d323112", "code": "PKETRT", "id": 96970, "logo": null, "date": "2026-08-28T15:40:00+02:00", "start": "15:40", "end": "2026-08-28T16:00:00+02:00", "duration": "00:20", "room": "Martinique", "slug": "sotm2026-96970-style-as-code-moving-beyond-off-the-shelf-to-unlock-the-full-richness-of-osm-data", "url": "https://pretalx.com/sotm2026/talk/PKETRT/", "title": "Style-as-Code: Moving Beyond \"Off-the-Shelf\" to Unlock the Full Richness of OSM Data", "subtitle": "", "track": "User Experiences", "type": "Talk", "language": "fr", "abstract": "OpenStreetMap is one of the richest databases in the world. state of the map\n\nwhenever it comes to creating a vector base map, we all run into the same wall: the daunting complexity of MapLibre/Mapbox GL style files. The result? We tend to fall back on \"off-the-shelf\" styles or minor variations, smoothing over the semantic richness of the underlying data.\n\nAs a GIS engineer at SNCF Connect & Tech, I had to rethink my methods to stop being held back by my tools. In this talk, I share my hands-on experience building an industrial-grade workflow to regain full control over map rendering:\n\n- **Style-as-Code:** Why and how I moved away from visual editors (such as Maputnik) to work directly with JSON in a text editor.\n- **The \"Live Edit\" workflow:** A walkthrough of my toolstack \u2014 simple, reproducible, and built entirely on open-source components.\n- **The Design/OSM translator:** My method for collaborating with designers who have no background in geography or the OSM data model, and turning their creative intentions into complex technical filters.\n\nThe goal is to show that anyone can build and maintain a large number of fully custom styles.", "description": "1. The Problem: The JSON Wall \n\nWhy do we keep getting stuck with the same base maps? I will revisit the challenge of maintaining 5,000-line files and the inability of conventional tools to handle evolving data schemas. \n\n2. Style-as-Code \n\nI will detail the advantages of the code-based approach: version control with Git, modularity, and above all the ability to modify hundreds of layers at once. I will cover the use of tools like Stamen's map-gl-style-build to break down an unwieldy style into logical, reusable components. \n\n3. Live Edit Stack Demo \n\nHow to set up your environment so that style work becomes as fluid as web development. I will show how I use MapLibre to preview changes instantly and how I compare styles side by side to validate rendering quality. \n\n4. Collaborating with Creatives \n\nThe GIS engineer as translator. I will share my tips for bridging the gap between a client or designer's vision \u2014 often aesthetic in nature \u2014 and the technical reality of OSM. \n\nConclusion: Cartography for everyone \u2014 customization is no longer a luxury reserved for web giants. By industrializing our methods, we can all produce maps that reflect our own vision and do justice to the richness of the OpenStreetMap data model", "recording_license": "", "do_not_record": false, "persons": [{"code": "WTJWBA", "name": "paul goullencourt", "avatar": null, "biography": "GIS engineer on the Tesmo Maps project for the past year. I am passionate about data visualisation and cartographic rendering, with a particular interest in open-source tools and the possibilities they offer for working with OpenStreetMap data. As the OSM specialist within my organisation, I also actively contribute to OpenStreetMap, with a focus on railway data", "public_name": "paul goullencourt", "guid": "f9d06cc8-0b4a-5299-a40a-30c9efbd675c", "url": "https://pretalx.com/sotm2026/speaker/WTJWBA/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/PKETRT/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/PKETRT/", "attachments": []}, {"guid": "328554c3-3b2f-5c1c-ba57-b47bf5de8e2e", "code": "CXXRXD", "id": 95340, "logo": null, "date": "2026-08-28T16:45:00+02:00", "start": "16:45", "end": "2026-08-28T17:05:00+02:00", "duration": "00:20", "room": "Martinique", "slug": "sotm2026-95340-how-carto-cite-maintains-osm-data-for-436-train-stations-efficiently-using-postgis-and-qgis", "url": "https://pretalx.com/sotm2026/talk/CXXRXD/", "title": "How Carto\u2019Cit\u00e9 maintains OSM data for 436 train stations efficiently using PostGIS and QGIS", "subtitle": "", "track": "Data Analysis & Data Model", "type": "Talk", "language": "en", "abstract": "SNCF Transilien has mapped with great details 436 train stations in the Greater Paris area. This work was conducted in several stages, between 2018 and 2022. An application using this data helps travelers to find their way inside and around railway stations. The app displays multi-level floor plans, enables users to find equipments and services, and provides indoor/outdoor routing with an option to use elevators rather than stairways.\n\nEnsuring these services function properly requires to **maintain the data**. This means both updating it when a station or its neighbourhood has changed, and preserving the high quality of the data. The latter is achieved by checking changes to the data inside and around railway stations. This **moderation work** is achieved through an innovative process that enables us to :\n- compare the data for each station between 2 dates freely defined\n- detect and classify changes that need to be checked \n- apply a whitelist to avoid checking one's own changes\n- review those changes and produce a report \n\nWe set up a project that is based on **PostGIS** and **QGIS**, makes use of **osmium** and **osm2pgsql**, and requires a small amount of SQL code to detect changes. This project enables us to efficiently moderate the data changes that can impact the SNCF app. \n\nThis talk will present our methodology, which can be replicated and adapted to all sorts of OSM data, along with a few helpful tricks.", "description": "### R\u00e9sum\u00e9 (french abstract)\n\n## Comment Carto\u2019Cit\u00e9 maintient efficacement les donn\u00e9es OSM de 436 gares avec PostGIS et QGIS\n\nSNCF Transilien a cartographi\u00e9 de mani\u00e8re tr\u00e8s d\u00e9taill\u00e9e les 436 gares de son r\u00e9seau sur OSM. Ce travail s\u2019est d\u00e9roul\u00e9 en plusieurs \u00e9tapes, entre 2018 et 2022. Une application utilisant ces donn\u00e9es aide les voyageurs \u00e0 s\u2019orienter \u00e0 l\u2019int\u00e9rieur et aux abords des gares. L'application affiche des plans d'\u00e9tage \u00e0 plusieurs niveaux, permet aux utilisateurs de localiser les \u00e9quipements et les services, et propose un guidage int\u00e9rieur/ext\u00e9rieur avec la possibilit\u00e9 d'utiliser les ascenseurs plut\u00f4t que les escaliers.\n\nMaintenir le bon fonctionnement de cette application n\u00e9cessite de **maintenir les donn\u00e9es**. Il s'agit \u00e0 la fois d'actualiser les donn\u00e9es suite aux travaux r\u00e9alis\u00e9s en gare, et de garantir leur haut niveau de qualit\u00e9 en v\u00e9rifiant les contributions de la communaut\u00e9. Pour effectuer ce travail de **mod\u00e9ration**, Carto\u2019Cit\u00e9 a mis en place une approche originale qui permet de :\n- comparer les donn\u00e9es de chaque gare entre 2 dates d\u00e9finies librement\n- d\u00e9tecter les modifications \u00e0 v\u00e9rifier en fonction de crit\u00e8res configurables\n- appliquer une liste blanche pour \u00e9viter de v\u00e9rifier nos propres modifications\n- r\u00e9aliser un suivi de ces signalements et produire un rapport\n\nNous avons mis en place un projet bas\u00e9 sur **PostGIS** et **QGIS**, qui utilise **osmium** et **osm2pgsql**, et n\u00e9cessite une petite quantit\u00e9 de code SQL pour d\u00e9tecter les modifications. Ce projet nous permet de mod\u00e9rer efficacement les modifications de donn\u00e9es susceptibles d'avoir un impact sur l'application SNCF. \n\nCette pr\u00e9sentation exposera notre m\u00e9thodologie, qui peut \u00eatre reproduite et adapt\u00e9e \u00e0 toutes sortes de donn\u00e9es OSM, ainsi que quelques astuces utiles.", "recording_license": "", "do_not_record": false, "persons": [{"code": "PABVYC", "name": "Antoine Riche", "avatar": "https://pretalx.com/media/avatars/ESDR9W_PVZqTSD.webp", "biography": "Antoine came across OSM in 2014 and this changed his life. In just a few weeks he turned from a GIS developer to an OpenStreetMap consultant, and founded [Carto\u2019Cit\u00e9](https://cartocite.fr/). Antoine works with SNCF since 2016, and conducted the detailed mapping of 436 railway stations with a team of 6 mappers.\n\nAntoine is a member of [OSM France](https://www.openstreetmap.fr/) and organised several voluntary projects in Nantes where he lives.\n\nCarto\u2019Cit\u00e9 is a funding member of the french [F\u00e9d\u00e9ration des professionnels OpenStreetMap](https://fposm.fr/) (FPOSM).", "public_name": "Antoine Riche", "guid": "36a09fa6-85d4-5d4d-830b-a17ec2491120", "url": "https://pretalx.com/sotm2026/speaker/PABVYC/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/CXXRXD/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/CXXRXD/", "attachments": [{"title": "Slides", "url": "/media/sotm2026/submissions/CXXRXD/resources/20260828_-_SOTM_-_FLPZNOF.pdf", "type": "related"}]}, {"guid": "666bb0d9-24ad-54c2-a10f-e546d66ab1b9", "code": "8ZWXKA", "id": 98502, "logo": null, "date": "2026-08-28T17:20:00+02:00", "start": "17:20", "end": "2026-08-28T17:40:00+02:00", "duration": "00:20", "room": "Martinique", "slug": "sotm2026-98502-lightning-talks-i", "url": "https://pretalx.com/sotm2026/talk/8ZWXKA/", "title": "Lightning Talks I", "subtitle": "", "track": "Lightning Talks", "type": "Talk", "language": "en", "abstract": "* Using an import as a QA tool for aligning buildings (Andrew Hain)\n* Gathering price of the world: Open Prices, between OSM and Open Food Facts  (Alex Bourreau)", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "SNKPLF", "name": "SotM Working Group", "avatar": null, "biography": null, "public_name": "SotM Working Group", "guid": "f6fa5674-5726-564b-8067-4c97aa612977", "url": "https://pretalx.com/sotm2026/speaker/SNKPLF/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/8ZWXKA/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/8ZWXKA/", "attachments": []}, {"guid": "82e373c5-53d9-5ac3-aaa5-848b8d6f3dc4", "code": "H9VJ7S", "id": 97007, "logo": null, "date": "2026-08-28T17:55:00+02:00", "start": "17:55", "end": "2026-08-28T18:15:00+02:00", "duration": "00:20", "room": "Martinique", "slug": "sotm2026-97007-national-mapping-and-cadastral-agencies-nmcas-and-their-relationship-with-osm-the-example-of-the-german-bkg", "url": "https://pretalx.com/sotm2026/talk/H9VJ7S/", "title": "National Mapping and Cadastral agencies (NMCAs) and their relationship with OSM: the example of the German BKG", "subtitle": "", "track": "User Experiences", "type": "Talk", "language": "en", "abstract": "The Federal Agency for Cartography and Geodesy (BKG) has a long history on the usage of OpenStreetMap data and plans to further set this data as a reliable source for geospatial products published by governmental bodies. The aim of the talk is to give an overview how NMCAs and federal institutions in Germany use the geospatial data collected and publicized by mappers around the globe and how we want to strengthen the interaction between public administration and the OSM community.", "description": "We submit this talk as we would like to give an overview on the usage of OpenStreetMap data by NMCAs on the example of the BKG. The BKG, based in Frankfurt am Main, Germany, is a National Mapping Agency with the task of preparing, updating and provisioning of geodetic-, location-, and spatial based data products. We use OSM data as a reliable source for years and want to cement this by further updating existing products like TopPlusOpen, which is based on a synergy of official data and OSM data. We also reinforce this position by participating in the annual FOSSGIS conference, which is organized by FOSSGIS e.V., the local OSMF chapter in Germany.\n\nAlso, we would like to explain how we support and contribute to open source software development under the guidelines of further enhancing the usage of OSM data. One example of our contribution of a software product in the OSM world is by supporting the development of a tool for assessing the quality of OSM data in collaboration with HeiGIT, the ohsome quality analysis integrated in the ohsome dashboard. One of the major challenges for NMCAs is the quality of the obtained data, as users lay an even higher emphasis on the temporal, spatial and numerical quality on data published by government agencies. With the support of ohsome dashboard we want to give an indicator for the reliability of the data collected in certain regions.\n\nLastly, we also want to give an overview in which extent other public bodies use OSM data for their everyday tasks in different sectors. For example, public institutions largely use OpenRouteService (ORS) by HeiGIT to meet their routing service needs without relying on private providers. We host our own instance of this ORS and also develop adjacent products like RoutingPlus, which is an open source solution specifically developed for public bodies.", "recording_license": "", "do_not_record": false, "persons": [{"code": "NCELN7", "name": "Konstantin Kr\u00f6mer", "avatar": "https://pretalx.com/media/avatars/BPLQG9_XxFWuur.webp", "biography": "The German Federal Agency for Cartography and Geodesy (BKG) set their task to promote the usage of open source sotware and open data products. This also includes the usage of OpenStreetMap data as a part of federal geodata products. Furthermore, the BKG publishes data products under open data licenses with ODbL conformity.\n\nI work in a coordinative function at the BKG and would like to talk about the growing role of OpenStreetMap for national mapping and cadastral agencies (NMCAs). Furthermore I would like to throw the spotlight on a national OSM chapter which promotes the preservation of OSM data.", "public_name": "Konstantin Kr\u00f6mer", "guid": "9872c617-156c-5997-a972-4165a5415a68", "url": "https://pretalx.com/sotm2026/speaker/NCELN7/"}, {"code": "9VBU7H", "name": "Peregrina Blumhoff", "avatar": "https://pretalx.com/media/avatars/PU9FWH_2IYODJF.webp", "biography": "Project manager at the Federal Agency for Cartography and Geodesy (Bundesamt f\u00fcr Kartographie und Geod\u00e4sie (BKG)) responsible for the project \"Qualit\u00e4tsabsch\u00e4tzung von OSM-Daten\" (OSM Quality Analysis).\nThe project resolves around developing a tool for assessing the quality of OSM data in collaboration with our project partner Heidelberg Institute for Geoinformation Technology (HeiGIT).", "public_name": "Peregrina Blumhoff", "guid": "2f2e8276-ed51-55bb-9013-951371164722", "url": "https://pretalx.com/sotm2026/speaker/9VBU7H/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/H9VJ7S/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/H9VJ7S/", "attachments": [{"title": "Presentation slides provided by BKG", "url": "/media/sotm2026/submissions/H9VJ7S/resources/2026-08-28_SotM_B_S5tcvNV.pdf", "type": "related"}]}], "Tahiti": [{"guid": "92794335-a321-52ca-a6bc-d7c166ce1ab5", "code": "WHNUVN", "id": 96854, "logo": null, "date": "2026-08-28T11:15:00+02:00", "start": "11:15", "end": "2026-08-28T12:15:00+02:00", "duration": "01:00", "room": "Tahiti", "slug": "sotm2026-96854-osm-mapping-101", "url": "https://pretalx.com/sotm2026/talk/WHNUVN/", "title": "OSM Mapping 101", "subtitle": "", "track": "OSM Basics", "type": "Workshop", "language": "en", "abstract": "Starting out mapping can feel scary, especially if one has little or no prior knowledge about the tools, concepts and workflows of creating a map. OpenStreetMap, as a collaborative project, is welcoming every new mapper with open hands and tries to help and guide new contributors by offering mapping tools that are well suited also for beginners. This workflow showcases some of these tools, in particular the iD editor, the default map editor on openstreetmap.org. The basics of mapping are shown in a few examples of common mapping situations. Also covered are the ins and outs of the OSM community, resources where to find help, as well as the most important concepts of OpenStreetMap's data and tagging model.", "description": "This workshop is targeted to contributors who are new to the OpenStreetMap and mappers with relatively little experience. The workshop will start covering the steps from creating your first account, getting familiar with the user interface of the map editor and basic map editing. It continues to introduce the most important concepts of OpenStreetMap's data model and show where to find help and additional information about the map features and attribute tags in OSM. Additionally, it is explained how the OSM community as a whole is working and connected. The workshop concludes with a few pointers to alternative mapping tools such as mobile apps to contribute to OSM, and showcases a few useful additional tools that can help while mapping.", "recording_license": "", "do_not_record": false, "persons": [{"code": "AM8TGJ", "name": "Martin Raifer", "avatar": null, "biography": "I do currently maintain the iD editor for the OpenStreetMap Foundation. I do also have a part time position at HeiGIT (Heidelberg Institute for Geoinformation Technology), where I contribute to software for academic research about OSM data. I'm also responsible for overpass-turbo, the web interface for the Overpass API, as well as a few other OSM-related projects.", "public_name": "Martin Raifer", "guid": "df1f91cb-ef47-5b8b-b669-8d9d3e5cfc4e", "url": "https://pretalx.com/sotm2026/speaker/AM8TGJ/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/WHNUVN/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/WHNUVN/", "attachments": []}, {"guid": "1931267f-2060-5b59-b55d-9977c6f82b06", "code": "E7G93L", "id": 96869, "logo": null, "date": "2026-08-28T14:30:00+02:00", "start": "14:30", "end": "2026-08-28T15:30:00+02:00", "duration": "01:00", "room": "Tahiti", "slug": "sotm2026-96869-local-chapters-communities-congress", "url": "https://pretalx.com/sotm2026/talk/E7G93L/", "title": "Local Chapters & Communities Congress", "subtitle": "", "track": "Community and Foundation", "type": "Workshop", "language": "en", "abstract": "After several years of virtual Local Chapters & Communities Congresses, the LCCWG is bringing the Congress back in person at State of the Map. Whether you represent a formally affiliated Local Chapter, lead a local user group, or are just curious about how OSM communities around the world organize themselves, join us to swap stories, share what's working (and what isn't), and help shape what community support should look like.", "description": "The Local Chapters & Communities Congresses are gatherings of OSM community leaders and members organized by the Local Chapters and Communities Working Group (LCCWG). Since 2020, the Congress has been held virtually, giving us reach but inevitably limiting the kind of candid exchanges that make in-person community meetings valuable.\n\nThis session at SotM is designed as a working meeting, an open space for connecting, sharing, and learning. We want to use the time we have in the same room to: hear directly from community leaders across regions, surface the questions that matter most right now, and give people a chance to connect with others working on similar challenges.\n\nYou do not need to be part of a Local Chapter to join. The session is for anyone active in, or curious about, organizing an OSM community: local chapter leaders, informal user group organizers, YouthMappers chapter leads, HOT community members, event organizers, and OSMF members who want to better understand the ecosystem they support.\n\nWe will also share about LCCWG's ongoing work, including how to get involved and support the working group.", "recording_license": "", "do_not_record": false, "persons": [{"code": "JYPRZC", "name": "Laura Mugeha", "avatar": "https://pretalx.com/media/avatars/KEEP87_a80gesX.webp", "biography": "Laura is a Geospatial engineer working at the intersection of open data, free and open-source software, and sustainable development. Committed to building for impact, she harnesses the power of technology to drive positive change. \n\nIn her free time, Laura volunteers with tech communities. She currently sits on the OpenStreetMap Foundation board to support the OpenStreetMap community, a worldwide mapping effort to create and provide free geographic data to anyone, anywhere, with no restrictions.", "public_name": "Laura Mugeha", "guid": "e0f96846-87b7-5b0e-ac8b-914ff78062f4", "url": "https://pretalx.com/sotm2026/speaker/JYPRZC/"}, {"code": "XWZUPE", "name": "Michael Montani", "avatar": "https://pretalx.com/media/avatars/XQNVGT_7mF9RyW.webp", "biography": "Michael is an OSM contributor since 2016 and currently works as Software Engineer at the European Commission Joint Research Centre. For the past 6 years, he worked for the United Nations Global Service Centre where he brought OpenStreetMap to UN Secretariat, Agencies and Peacekeeping missions. Previously he was 2018 YouthMappers Research Fellow and co-founder of PoliMappers, the first European chapter of YouthMappers. Over the years, he trained thousands of new OSM contributors from universities and local communities worldwide, especially in Africa and Europe.", "public_name": "Michael Montani", "guid": "761ed4b0-3543-57fd-b419-25a3c0350797", "url": "https://pretalx.com/sotm2026/speaker/XWZUPE/"}, {"code": "PUV3FF", "name": "Maggie Cawley", "avatar": null, "biography": "Maggie has been spending her time volunteering with OpenStreetMap for more than a decade. She spent 10 years as a geospatial consultant and urban planner. Maggie currently serves as the Executive Director for OpenStreetMap US where she works to engage, support and grow the OpenStreetMap project and community across the United States through programs, advocacy, and the annual State of the Map US conference.", "public_name": "Maggie Cawley", "guid": "b90215f9-7a59-5321-9650-3531ba89aa67", "url": "https://pretalx.com/sotm2026/speaker/PUV3FF/"}, {"code": "TYKARJ", "name": "Geoffrey Kateregga", "avatar": null, "biography": null, "public_name": "Geoffrey Kateregga", "guid": "e54f5c32-b56c-546b-a31c-de9d33c9ad25", "url": "https://pretalx.com/sotm2026/speaker/TYKARJ/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/E7G93L/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/E7G93L/", "attachments": []}, {"guid": "f8c60032-4621-5cec-8291-801c21e3a9c1", "code": "H8JKNT", "id": 96793, "logo": null, "date": "2026-08-28T16:45:00+02:00", "start": "16:45", "end": "2026-08-28T17:45:00+02:00", "duration": "01:00", "room": "Tahiti", "slug": "sotm2026-96793-carto-mission-bringing-participatory-mapping-off-screen-through-cooperative-play", "url": "https://pretalx.com/sotm2026/talk/H8JKNT/", "title": "Carto'Mission: Bringing Participatory Mapping Off-Screen Through Cooperative Play", "subtitle": "", "track": "Education", "type": "Workshop", "language": "fr", "abstract": "How do we turn a one-day contributor \u2014 someone introduced to OSM at a mapathon, an outreach booth or an awareness event \u2014 into a mapper who keeps contributing over time?\n\n**Carto'Mission** is a fully cooperative board game designed to address precisely this retention challenge. Around a printed board representing a small section of a city, players take on the role of a team of mapping agents tasked with verifying, correcting and completing geographic data. But Carto'Mission is more than a game: it is a **non-digital mediation device** that simulates the peer-review process at the heart of OpenStreetMap, and serves as a **pedagogical springboard** toward real-world use of tools like StreetComplete and iD.\n\nThis talk offers a hands-on report on the design, facilitation and deployment of the game, along with the lessons learned from our first field experiences.", "description": "Open geographic data fuels an ever-growing number of territories, public services and citizen-led initiatives. Yet the OpenStreetMap community faces a structural challenge that is rarely named openly: **sustained engagement**. How do we make sure that someone introduced to OSM at a one-off event doesn't stop after that first experience? How do we turn curiosity into a regular practice?\n\nTo address this, we created **Carto'Mission**, a cooperative board game that makes tangible \u2014 through hands-on observation, manipulation and debate \u2014 what a contributory geographic database actually is. The goal is straightforward: **demystify OSM and give players the confidence they need to start contributing on their own.**\n\nInspired by StreetComplete and iD, the game is played around a printed board (currently a 5\u00d75 grid of square tiles, with a future evolution toward modular hexagonal tiles under consideration). Players cooperate as a team of mapping agents to complete observation and validation missions, supported by a **three-tier pedagogical progression:**\n\n- **Junior \u2014 Observation:** map-reading and simple visual observation, with no technical vocabulary.\n\n- **Intermediate \u2014 Initiation:** introduction to the key = value logic, using French-translated tags (e.g. amenagement = banc).\n\n- **Expert \u2014 Contribution:** real international OSM tags (e.g. wheelchair=yes) applied to deliberately ambiguous situations.\n\nThe pedagogical core of the game lies in its **debate mechanic.** Visual observation is regularly clouded by contradictory Clue cards: an official sign versus a local resident's testimony, an outdated database entry versus a recent photo. The team must argue, cross-check and reach consensus before validating the data (Green token), correcting it (Yellow token) or leaving a note for a field survey (Orange token).\n\nBy replicating the very peer-verification processes that make OSM data robust, Carto'Mission lets players **experience from the inside** what contributing to a digital commons actually means. Players don't just learn what a tag is: they live through doubt, deliberation and the responsibility of a contributor. By the end of a game, they have the vocabulary, the reflexes and \u2014 most importantly \u2014 the felt legitimacy to open StreetComplete the very next day and start mapping their own neighbourhood.", "recording_license": "", "do_not_record": false, "persons": [{"code": "CKZBPL", "name": "Coralie Le Bian", "avatar": null, "biography": "Contributrice bretonne depuis 2018, je participe aux rencontres brestoises et prends plaisir \u00e0 enrichir OpenStreetMap.\n\n\u00c0 travers mon travail en m\u00e9diath\u00e8que, j\u2019ai eu envie de faire d\u00e9couvrir la cartographie libre \u00e0 un public plus large, en menant des projets concrets et collaboratifs. Aujourd\u2019hui, je suis ravie de partager cette exp\u00e9rience avec vous et d\u2019\u00e9changer sur la place d\u2019OSM comme outil de m\u00e9diation culturelle et patrimoniale.", "public_name": "Coralie Le Bian", "guid": "18dc307a-6ae5-55a6-8fe4-690c70ba4f5b", "url": "https://pretalx.com/sotm2026/speaker/CKZBPL/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/H8JKNT/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/H8JKNT/", "attachments": []}], "Porquerolles": [{"guid": "2f978d55-de48-5ca9-a315-404e84505109", "code": "UHDQA3", "id": 105147, "logo": null, "date": "2026-08-28T11:15:00+02:00", "start": "11:15", "end": "2026-08-28T11:45:00+02:00", "duration": "00:30", "room": "Porquerolles", "slug": "sotm2026-105147-id-tagging-schema-lets-improve-them", "url": "https://pretalx.com/sotm2026/talk/UHDQA3/", "title": "iD Tagging Schema - Lets improve them", "subtitle": "", "track": "Birds of a Feather/BOF Session", "type": "Birds of a Feather/BOF Session", "language": "en", "abstract": "Let us improve the tagging schema. No coding experience needed.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "QDST7R", "name": "Mateusz Konieczny", "avatar": null, "biography": "Active OpenStreetMap mapper and contributor to software powering OpenStreetMap. Contributed some minor improvements to multiple editors and significant improvements to StreetComplete and iD.\n\nMapper active since 2013, especially interested in mapping bicycle infrastructure, hiking trails, parks. Mapping using Vespucci, StreetComplete, JOSM, level0, special editing tools and automated edits.\n\nInvolved in improving documentation about existing tagging schemas by contributing to OpenStreetMap Wiki. Active also in inventing new tagging schema where existing ones were insufficient.", "public_name": "Mateusz Konieczny", "guid": "7c5f959a-0d10-588d-805c-895e9977551a", "url": "https://pretalx.com/sotm2026/speaker/QDST7R/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/UHDQA3/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/UHDQA3/", "attachments": []}, {"guid": "99369196-0c14-5a87-ab29-a35eed338bec", "code": "TZGRHQ", "id": 104998, "logo": null, "date": "2026-08-28T11:50:00+02:00", "start": "11:50", "end": "2026-08-28T12:20:00+02:00", "duration": "00:30", "room": "Porquerolles", "slug": "sotm2026-104998-birds-of-feather-self-organised-sessions-i", "url": "https://pretalx.com/sotm2026/talk/TZGRHQ/", "title": "Birds of Feather - Self-organised Sessions I", "subtitle": "", "track": null, "type": "Birds of a Feather/BOF Session", "language": "en", "abstract": "Room for self-organised sessions.\n\nTo book a session, please find the Birds-Of-Feather whiteboard and sign up with the topic and your name. You can either book a single 30min slot or a double slot at 60min. Slots are first-come-first-serve. The sessions will also be published in the online schedule.", "description": "", "recording_license": "", "do_not_record": false, "persons": [], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/TZGRHQ/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/TZGRHQ/", "attachments": []}, {"guid": "ab81d125-3120-5640-956d-efc11f481b97", "code": "JZEEGD", "id": 105151, "logo": null, "date": "2026-08-28T15:05:00+02:00", "start": "15:05", "end": "2026-08-28T16:05:00+02:00", "duration": "01:00", "room": "Porquerolles", "slug": "sotm2026-105151-panoramax-foundation", "url": "https://pretalx.com/sotm2026/talk/JZEEGD/", "title": "Panoramax Foundation", "subtitle": "", "track": "Birds of a Feather/BOF Session", "type": "Birds of a Feather/BOF Session", "language": "en", "abstract": "", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "MVXL7N", "name": "Christian Quest", "avatar": "https://pretalx.com/media/avatars/NUTZMW_W8Zjv0R.webp", "biography": "OSM contributor since 2009, founder of OpenStreetMap France in 2011.\nPart of the team that takes care of OpenStreetMap France servers and several services (for example the french and humanitarian basemaps, uMap, etc.).\n\nInitiator of several project like OpenEventDatabase, opendatArchives, OpenSolarMap... and Minitel museum !\n\nCurrently fully dedicated to the Panoramax project.", "public_name": "Christian Quest", "guid": "05f0d5ac-0f52-5d88-8b53-1c3b993fba42", "url": "https://pretalx.com/sotm2026/speaker/MVXL7N/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/JZEEGD/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/JZEEGD/", "attachments": []}, {"guid": "7782ebf7-ae65-5fcd-bf40-590f428fe1b7", "code": "GHVFC8", "id": 105155, "logo": null, "date": "2026-08-28T16:45:00+02:00", "start": "16:45", "end": "2026-08-28T17:45:00+02:00", "duration": "01:00", "room": "Porquerolles", "slug": "sotm2026-105155-opencollabmap", "url": "https://pretalx.com/sotm2026/talk/GHVFC8/", "title": "OpenCollabMap", "subtitle": "", "track": "Birds of a Feather/BOF Session", "type": "Birds of a Feather/BOF Session", "language": "en", "abstract": "An OSM server with git-like branching.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "PH37TA", "name": "Emmanuel Castro", "avatar": "https://pretalx.com/media/avatars/U7BVHR_40FvtSg.webp", "biography": "GIS Software Architect at Capgemini\n\nEmmanuel explores innovative yet pragmatic architectures for geographic information systems. Drawing on a broad range of experience, he designs resilient GIS solutions that integrate both open\u2011source and proprietary technologies. His work bridges business architecture, algorithmic processing, big data, software engineering, and artificial intelligence within the geospatial domain.\n\nhttps://www.linkedin.com/in/emmanuel-castro-80a3581/", "public_name": "Emmanuel Castro", "guid": "0a31d0cc-52e3-535d-a847-0922086257e7", "url": "https://pretalx.com/sotm2026/speaker/PH37TA/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/GHVFC8/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/GHVFC8/", "attachments": []}], "Ouessant": [{"guid": "e4dc83ab-c149-5ade-a1a6-24503198d88a", "code": "KA7YSF", "id": 105000, "logo": null, "date": "2026-08-28T11:15:00+02:00", "start": "11:15", "end": "2026-08-28T11:45:00+02:00", "duration": "00:30", "room": "Ouessant", "slug": "sotm2026-105000-birds-of-feather-self-organised-sessions-ii", "url": "https://pretalx.com/sotm2026/talk/KA7YSF/", "title": "Birds of Feather - Self-organised Sessions II", "subtitle": "", "track": null, "type": "Birds of a Feather/BOF Session", "language": "en", "abstract": "Room for self-organised sessions.\n\nTo book a session, please find the Birds-Of-Feather whiteboard and sign up with the topic and your name. You can either book a single 30min slot or a double slot at 60min. Slots are first-come-first-serve. The sessions will also be published in the online schedule.", "description": "", "recording_license": "", "do_not_record": false, "persons": [], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/KA7YSF/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/KA7YSF/", "attachments": []}, {"guid": "0207762a-8917-5525-a317-5cb85e5069e4", "code": "ZVEWAK", "id": 105160, "logo": null, "date": "2026-08-28T14:30:00+02:00", "start": "14:30", "end": "2026-08-28T15:00:00+02:00", "duration": "00:30", "room": "Ouessant", "slug": "sotm2026-105160-maplibre-styles-in-glug", "url": "https://pretalx.com/sotm2026/talk/ZVEWAK/", "title": "MapLibre styles in Glug", "subtitle": "", "track": "Birds of a Feather/BOF Session", "type": "Birds of a Feather/BOF Session", "language": "en", "abstract": "", "description": "", "recording_license": "", "do_not_record": false, "persons": [], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/ZVEWAK/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/ZVEWAK/", "attachments": []}, {"guid": "fed30060-c8ee-5d04-a430-21aa93aa5868", "code": "9NCFST", "id": 105161, "logo": null, "date": "2026-08-28T15:05:00+02:00", "start": "15:05", "end": "2026-08-28T15:35:00+02:00", "duration": "00:30", "room": "Ouessant", "slug": "sotm2026-105161-osmf-vector-tiles", "url": "https://pretalx.com/sotm2026/talk/9NCFST/", "title": "OSMF Vector Tiles", "subtitle": "", "track": "Birds of a Feather/BOF Session", "type": "Birds of a Feather/BOF Session", "language": "en", "abstract": "", "description": "", "recording_license": "", "do_not_record": false, "persons": [], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/9NCFST/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/9NCFST/", "attachments": []}]}}, {"index": 2, "date": "2026-08-29", "day_start": "2026-08-29T04:00:00+02:00", "day_end": "2026-08-30T03:59:00+02:00", "rooms": {"Guadeloupe": [{"guid": "d4256be5-87e7-5701-8113-a42ca8bc11e4", "code": "CWT8FR", "id": 97004, "logo": null, "date": "2026-08-29T09:30:00+02:00", "start": "09:30", "end": "2026-08-29T10:10:00+02:00", "duration": "00:40", "room": "Guadeloupe", "slug": "sotm2026-97004-the-republic-of-maps-together-let-s-unlock-the-power-of-maps-to-build-democracy", "url": "https://pretalx.com/sotm2026/talk/CWT8FR/", "title": "The Republic of Maps : Together, let's unlock the power of maps to build democracy", "subtitle": "", "track": "Cartography", "type": "Extended Talk", "language": "en", "abstract": "La R\u00e9publique des Cartes (\"The Republic of Maps\") is a French civic initiative launched by IGN, the national mapping agency and fifteen partners to put cartography at the service of democratic participation, territorial decision-making and popular education. \n\nIts first \"Jour de la Carte\" (\"Map Day\"), held on 4 February 2026, brought together around 115 grass-roots events across France: in town halls, schools, public libraries, design schools, urban-planning agencies and citizen collectives. The 2027 edition aims at 500 - 1000 events and at extending the movement internationally.\n\nBehind the initiative is a simple intuition. Maps are everywhere in our daily lives. They shape what we see, what we don't see, and the choices we make as citizens. Yet most people never get to make a map, question one, or discuss one collectively. La R\u00e9publique des Cartes gathers a broad coalition to change that - cartographers, designers, elected officials, teachers, researchers, urban planners, and partners ranging from Banque des Territoires, Vinci Group (La Fabrique de la Cit\u00e9 and Leonard), OVHcloud, Ubisoft, DocaPoste, LaPoste, NoDesign and a lot more.\n\nThis talk will share what we learned from the first edition, the strategy and ambitions for 2026-2027 and the open-licensed tools that have been built and tested in the field - including a 60-minute discussion workshop, an exhibition kit and a collaborative board game.\n\nFor the OpenStreetMap community, this is also an invitation. The 2027 edition will be meaningful if it connects more with the people who actually make maps. The worldwide OSM community is among the most legitimate, organised and demanding of those communities, and we are explicitly looking for ambassadors and partners who would like to bring a Map Day event to their territory, in their own language, in their own way.\n\nThe 40-minute slot will be split: about 20 minutes for the presentation, 20 minutes for a participatory segment based on the first part of our \"Map that we need\" workshop, so that the audience leaves with a concrete tool - and ideally a few new ideas about which maps the OSM ecosystem could help bring to life.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "REEXFC", "name": "Matthieu Chatry", "avatar": "https://pretalx.com/media/avatars/DSVGBC_fQwBEiM.webp", "biography": "Matthieu Chatry coordinates La R\u00e9publique des Cartes at IGN, the French national mapping agency. His real craft, though, is the animation of learning communities. For the past decade - first with [leChaudron.io](url), then as an independent facilitator under the [Amuseurs](url) name, he has designed workshops and built communities of practice to help people of all backgrounds build a confident, hands-on relationship with digital tools and most recently generative AI. \nHe now brings the same approach to maps: animating the coalition of partners and organisers behind  La R\u00e9publique des Cartes.", "public_name": "Matthieu Chatry", "guid": "ea873dc2-8a3a-513b-9a43-cdda9d3ff406", "url": "https://pretalx.com/sotm2026/speaker/REEXFC/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/CWT8FR/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/CWT8FR/", "attachments": [{"title": "Presentation showed", "url": "/media/sotm2026/submissions/CWT8FR/resources/Republique_des_Ca_dO5PH4D.pdf", "type": "related"}]}, {"guid": "8be00561-a7b5-5b3f-9d1c-b57b9a8c4b24", "code": "LT3DRY", "id": 94941, "logo": null, "date": "2026-08-29T11:15:00+02:00", "start": "11:15", "end": "2026-08-29T11:35:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-94941-motis-open-source-routing-engine", "url": "https://pretalx.com/sotm2026/talk/LT3DRY/", "title": "MOTIS (open source routing engine)", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "In this talk, we will present the open source routing engine MOTIS.\n\nMOTIS provides efficient profile-based real-time routing on OpenStreetMap street networks, public transit networks as well as intermodal door-to-door routing combining different modes of transportation, including sharing mobility as well as flexible and on-demand public transport offerings.\n\nWith its \"batteries included\" approach, MOTIS offers everything from geocoding to displaying routing results on its own vector tiles on a global scale with minimal memory usage which makes it a perfect fit for the Transitous project.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "AL7P8H", "name": "Felix G\u00fcndling", "avatar": "https://pretalx.com/media/avatars/8VWUWV_L3MtdBD.webp", "biography": "Felix is specialized in development of high performance software and optimization problems, especially in mobility. He is a maintainer of the MOTIS project which is open source since May, 2020. He works at the Technical University of Darmstadt and founded his startup triptix GmbH, which offers professional support, hosting and development for MOTIS.", "public_name": "Felix G\u00fcndling", "guid": "b921ef58-4f20-5225-9db4-b15fb310ca0a", "url": "https://pretalx.com/sotm2026/speaker/AL7P8H/"}, {"code": "ZG9UPY", "name": "Robin Durner", "avatar": null, "biography": "Robin has been developing software for about 15 years now and has since drifted ever closer towards public transport related topics. He has been analyzing and visualizing public transport and other geospatial data and trying to make stochastic public transport routing usable. Since 2025, he is working at TU Darmstadt on the MOTIS project and has also contributed to the Transitous project.\n\nhttps://github.com/traines-source", "public_name": "Robin Durner", "guid": "bb9ae5ed-bedb-5193-8de0-ce3215f14bcd", "url": "https://pretalx.com/sotm2026/speaker/ZG9UPY/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/LT3DRY/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/LT3DRY/", "attachments": [{"title": "Slides", "url": "/media/sotm2026/submissions/LT3DRY/resources/SOTM_MOTIS_ugfeL8r.pdf", "type": "related"}]}, {"guid": "126269c4-f202-5ae9-a8c7-1609371e10d0", "code": "3WLKJ9", "id": 96466, "logo": null, "date": "2026-08-29T11:50:00+02:00", "start": "11:50", "end": "2026-08-29T12:10:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-96466-transitous-free-and-open-public-transport-routing", "url": "https://pretalx.com/sotm2026/talk/3WLKJ9/", "title": "Transitous - Free and Open Public transport routing", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "There are several FOSS solutions for routing on OSM road data at planet scale, but until recently we lacked an intermodal router at a similar scale which also takes public transport and rental vehicles into account. Transitous is a community-run public transport routing service built entirely with Free Software and Open Data to fill this gap. Started in 2024 it meanwhile covers more 300,000 concurrent trips in over 60 countries.", "description": "In this talk we'll look at where Transitous came from, how it's built and what features it offers for use in FOSS applications. We will also cover what data it consumes. OSM is a crucial part of this of course, among other things for the first and last mile of a trip, as well as for transfers between public transport services. Reliably matching realtime information for e.g. elevators to OSM objects or routing inside buildings are particular challenges here.", "recording_license": "", "do_not_record": false, "persons": [{"code": "PRQAYK", "name": "Volker Krause", "avatar": "https://pretalx.com/media/avatars/L3NTGV_yQBbPXv.webp", "biography": "Volker is contributing to Free Software as a member of the KDE community since more than two decades. As part of his work on KDE's travel application Itinerary he has implemented OSM indoor rendering and routing components and got involved in the Open Transport community, as a founding member of Transitous and co-organizer of the Open Transport Community Conference.", "public_name": "Volker Krause", "guid": "f59a4344-ad79-5a5e-a7bb-c90590c5e449", "url": "https://pretalx.com/sotm2026/speaker/PRQAYK/"}], "links": [{"title": "Transitous", "url": "https://transitous.org", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/3WLKJ9/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/3WLKJ9/", "attachments": [{"title": "Slides", "url": "/media/sotm2026/submissions/3WLKJ9/resources/sotm-2026-transit_UMiM5f3.pdf", "type": "related"}]}, {"guid": "3ef47ec7-963b-5a8f-b7a9-cfaabf6a25f0", "code": "ZR8RTX", "id": 96146, "logo": null, "date": "2026-08-29T12:25:00+02:00", "start": "12:25", "end": "2026-08-29T12:45:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-96146-osrm-is-back-revitalizing-the-osm-native-routing-engine", "url": "https://pretalx.com/sotm2026/talk/ZR8RTX/", "title": "OSRM is Back: Revitalizing the OSM-Native Routing Engine", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "OSRM was once the go-to routing engine for anyone working with OpenStreetMap data: fast, purpose-built, and deeply aligned with OSM\u2019s data model. But in recent years, the project lost momentum. Issues piled up, pull requests stalled, and the community started asking: is anyone still home?\n\nThis talk shares early lessons from a renewed effort to change that, presented by OSRM\u2019s founder and BDFL.\n\nWe\u2019ll give an honest account of where OSRM stands today: what works, what doesn\u2019t, and what the broader routing ecosystem has taught us. More importantly, we\u2019ll share what the revitalization effort looks like in practice: a renewed commitment to OSM-first routing philosophy, a public roadmap, a lower contribution barrier, and a clearer community voice.\n\nAt the heart of this renewal is a shift in technical ambition. OSRM has always excelled as a high-performance server engine, but routing doesn\u2019t only happen in data centers. Field workers, humanitarian responders, cyclists navigating without connectivity: they all need routing on the device in their pocket. We\u2019ll outline early work toward a single codebase that serves both worlds, powering large-scale server deployments and running efficiently on handheld devices, without splitting the project or compromising OSM fidelity.\n\nOSRM\u2019s core strength has always been its refusal to treat OSM as just another data format. The routing profiles, the handling of access tags, the speed model: all of it is designed around how OSM actually works. That advantage is worth fighting for, and worth bringing to every platform it can reach.\n\nAttendees will leave with a clear picture of OSRM\u2019s current state, the technical roadmap ahead, and concrete ways to get involved.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "EJL7FK", "name": "Dennis Luxen", "avatar": "https://pretalx.com/media/avatars/8SGAKJ_pLLNu6b.webp", "biography": "Dennis Luxen is a computer scientist and routing expert, best known as the original lead developer of the Open Source Routing Machine (OSRM), a pioneering open source routing engine built on OpenStreetMap data. He earned his Ph.D. from the Karlsruhe Institute of Technology, where he focused on scalable route planning algorithms and mapping services.\n\nOver his career, Dennis has specialized in building low-latency, high-performance systems that translate complex research into practical technology. His work sits at the intersection of algorithms, infrastructure, and real-world applications at scale.", "public_name": "Dennis Luxen", "guid": "5f8d8bb5-96e6-5a9a-9842-1e1b60ad2063", "url": "https://pretalx.com/sotm2026/speaker/EJL7FK/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/ZR8RTX/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/ZR8RTX/", "attachments": []}, {"guid": "42668bf8-6c33-572c-bae5-e747ffb739fc", "code": "ZXBHXD", "id": 96985, "logo": null, "date": "2026-08-29T14:30:00+02:00", "start": "14:30", "end": "2026-08-29T14:50:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-96985-construction-ahead", "url": "https://pretalx.com/sotm2026/talk/ZXBHXD/", "title": "Construction ahead", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "Pardon our dust as OpenStreetMap\u2019s core software projects undergo some renovations! Now a year into the core software roadmap that we debuted in Manila and Dundee, we\u2019ll review some highlights from the past year in the openstreetmap-website project (the Web frontend and API), followed by a preview of things to come in the next several months. We\u2019ll go beyond our monthly summaries on the forum to offer a look into the day-to-day experience of contributing to these projects and how it has improved over the past year.", "description": "In addition to highlighting user-facing changes such as the MapLibre migration, we\u2019ll go over more developer-centric topics and behind-the-scenes features, such as our efforts to overhaul GPS trace management, improve privacy protections for GDPR compliance, and provide additional tools for moderators and administrators combating abuse of the site. This is also an opportunity for you to offer in-person feedback to our Sovereign Tech\u2013funded contributors as we dive into the final stretch of that investment.", "recording_license": "", "do_not_record": false, "persons": [{"code": "TNB9QM", "name": "Minh Nguy\u1ec5n", "avatar": "https://pretalx.com/media/avatars/FGMQNF_IPbsA3V.webp", "biography": "Minh is a longtime mapper and community organizer for OpenStreetMap and OpenHistoricalMap, focusing on the United States. On a typical day, you can find him roaming the streets of Silicon Valley, looking for quirky things to add to both maps. He serves as the OpenStreetMap Foundation\u2019s Core Software Development Facilitator, thanks to an investment from the Sovereign Tech Fund. He also volunteers as a member of the Software Dispute Resolution Panel, administrator of the OpenStreetMap Wiki, and advisor to OpenHistoricalMap.", "public_name": "Minh Nguy\u1ec5n", "guid": "ec23ecb0-97cf-563c-bce3-88f6186ba8e4", "url": "https://pretalx.com/sotm2026/speaker/TNB9QM/"}, {"code": "MKJXUC", "name": "Pablo Brasero", "avatar": "https://pretalx.com/media/avatars/7YANY9_5hPqpyG.webp", "biography": "Originally from Spain, currently in Northern Ireland, Pablo is a freelance Software Engineer specialising in web applications with Ruby. During his career, he has taken part in a long list of projects for companies ranging from small music startups to large banking concerns. Currently he is fulfilling his dream of working as a developer of Open Source Software, as a Core Software Developer for the OpenStreetMap Foundation", "public_name": "Pablo Brasero", "guid": "5bc629fe-d484-59aa-b561-313ff22a5a77", "url": "https://pretalx.com/sotm2026/speaker/MKJXUC/"}, {"code": "W7JADM", "name": "Ruben Lopez Mendoza", "avatar": "https://pretalx.com/media/avatars/B9AV93_Ah5RPMy.webp", "biography": "Rub21( Ruben) has been an active OpenStreetMap contributor for over a decade, mapping and building tools for JOSM and OSM data processing. He is currently working on improving the GPS traces infrastructure in OpenStreetMap, and also helps maintain the infrastructure and tooling behind OpenHistoricalMap. He is part of the LatAm OSM community and has been involved in supporting open mapping projects across the region for many years.", "public_name": "Ruben Lopez Mendoza", "guid": "0d1c02b7-25d9-5f77-9059-a7f071f6b49e", "url": "https://pretalx.com/sotm2026/speaker/W7JADM/"}], "links": [{"title": "Online slides", "url": "https://sotm2026.pablobm.com/", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/ZXBHXD/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/ZXBHXD/", "attachments": [{"title": "PDF slides", "url": "/media/sotm2026/submissions/ZXBHXD/resources/Construction_Ahea_9n0e4LI.pdf", "type": "related"}]}, {"guid": "127910b9-464c-5831-b6ff-8aa96aec3a6e", "code": "EFTDVX", "id": 95817, "logo": null, "date": "2026-08-29T15:05:00+02:00", "start": "15:05", "end": "2026-08-29T15:25:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-95817-upgrading-the-osm-front-page", "url": "https://pretalx.com/sotm2026/talk/EFTDVX/", "title": "Upgrading the OSM Front Page", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "As a mapper, we spend hours micro-mapping surface types, tactile paving, complex building geometries or trees. But when you check the map, they are invisible.\n\nLegacy web cartography forces a compromise:\n**To keep standard Vector Tiles (MVT) small enough for network transfer, rendering pipelines systematically drop niche tags and simplify geometries**.\n\nMapLibre is now the default vector renderer on the OpenStreetMap front page. Moving from static rasters to interactive vectors is the next step in improving this experience.\nTo make the front page a true 1:1 reflection of the database, we must eliminate this data-loss.\n\nThis talk covers the MapLibre technical roadmap for rendering the complete OSM tag dictionary directly in the browser. We detail the integration of two technologies:\n- **MapLibre Tile (MLT)**: A vector data compression specification that reduces bandwidth, allowing the delivery of heavy, unfiltered OSM datasets to the client.\n- **WebGPU**: Shifting the computational bottleneck from the CPU to the GPU, enabling browsers to render massive MLT payloads, dynamic styling, and 3D geometries at 60fps.\n\nThe presentation features a live, split-screen benchmark using dense data to compare the older raster maps vs legacy MVT/WebGL vs the MLT/WebGPU pipeline.\nAttendees will see how upgrading the shared open-source infrastructure is necessary to visualize **every** mapper\u2019s contribution.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "LDXSCY", "name": "Frank Elsinga", "avatar": "https://pretalx.com/media/avatars/FPQKNR_wx9Mqhk.webp", "biography": "Frank Elsinga from the Technical University of Munich is a member of the MapLibre Governing Board. He is actively engaged in advancing open innovation in the field of vector-based map rendering. Through his work, he helps bridge the gap between the open-source MapLibre community, academic research, and public administration, fostering collaboration and enabling the development of more transparent, accessible, and high-performance geospatial technologies.", "public_name": "Frank Elsinga", "guid": "2f2ae80b-53be-5b3d-9f27-0eef09b3ec76", "url": "https://pretalx.com/sotm2026/speaker/LDXSCY/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/EFTDVX/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/EFTDVX/", "attachments": []}, {"guid": "f734ad77-455d-5dca-8867-f1082dfd26a0", "code": "7ED7WQ", "id": 96946, "logo": null, "date": "2026-08-29T15:40:00+02:00", "start": "15:40", "end": "2026-08-29T16:00:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-96946-running-openstreetmap-org-in-the-age-of-ai", "url": "https://pretalx.com/sotm2026/talk/7ED7WQ/", "title": "Running OpenStreetMap.org in the Age of AI", "subtitle": "", "track": "Community and Foundation", "type": "Talk", "language": "en", "abstract": "Running OpenStreetMap.org services in the age of AI has introduced some interesting, surprising, and occasionally amusing operational challenges.\n\nThis talk offers an inside look at the challenges faced by the Operations Team when running open, permissive services in 2026. How do we keep OpenStreetMap welcoming to mappers, developers, researchers, and community tools, while protecting shared infrastructure from accidental misuse, excessive automation, and deliberate abuse?\n\nThrough real-world operational stories, light audience participation, and hopefully no live incident response, we will explore the balance between openness, resilience, and sustainability - and why keeping OpenStreetMap open sometimes requires a sense of humour, a good graph, and the occasional rate limit.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "YGZZPU", "name": "Grant Slater", "avatar": null, "biography": "Grant Slater is a long-time OpenStreetMap mapper (since 2006) and member of the OSM Operations Team. He has helped run the project's infrastructure since 2007 and now works as a Site Reliability Engineer for the OpenStreetMap Foundation. When not keeping servers online, he can usually be found on his allotment battling slugs.", "public_name": "Grant Slater", "guid": "6d99fbc4-088f-5da1-9ecb-9f6ff8a532d8", "url": "https://pretalx.com/sotm2026/speaker/YGZZPU/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/7ED7WQ/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/7ED7WQ/", "attachments": [{"title": "Slides", "url": "/media/sotm2026/submissions/7ED7WQ/resources/2026-ops-sotm-par_oyIMIa4.pdf", "type": "related"}]}, {"guid": "0ae0a95d-2404-559c-9eba-b27967abb6bc", "code": "VGGXRJ", "id": 97021, "logo": null, "date": "2026-08-29T16:45:00+02:00", "start": "16:45", "end": "2026-08-29T17:05:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-97021-clearance-quality-proxy-for-osm-replication-the-roadmap-up-to-v1-0", "url": "https://pretalx.com/sotm2026/talk/VGGXRJ/", "title": "Clearance: Quality Proxy for OSM Replication. The Roadmap up to v1.0", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "Clearance is an open-source quality-control proxy for OpenStreetMap replication. Rather than letting every changeset flow directly into downstream systems, it holds suspicious or potentially breaking changes for review while keeping compliant data flowing continuously. It acts as a standard OSM data source, providing PBF extracts, diffs and an Overpass API compatible endpoint of the filtered local copy. It is already used by over 40 organizations, including emergency services in Navarre, Spain, and is under review by the French railway infrastructure company SNCF R\u00e9seau and Belgian crisis services.\nThis talk will cover the last year's improvements and the roadmap up to version 1.0, including features funded by the NLnet/NGI0 project. It will focus on:\n    \u2022 multi-object conflation; \n    \u2022 diff rearrangement to allow partial validation while keeping data coherence; \n    \u2022 change detection in network continuity to avoid breaks or false connections, such as in road networks or power grids.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "EBPJLE", "name": "Fr\u00e9d\u00e9ric Rodrigo", "avatar": null, "biography": "Contributor for more than a decade, interested in data quality, vector tiles, and routing engines. Maintainer of Osmose-QA, an open-source OSM quality assurance tool detecting lot of issues worldwide. CTO at Teritorio, building OSM-based interactive web maps for local governments, and CTO at Cartoway, developing OSM-powered last-mile delivery optimization tools for logistics operators.", "public_name": "Fr\u00e9d\u00e9ric Rodrigo", "guid": "88f05553-1e1b-5657-8ea2-652ca8bb2e42", "url": "https://pretalx.com/sotm2026/speaker/EBPJLE/"}], "links": [{"title": "Slides", "url": "https://frodrigo.github.io/SotM-2026-Clearance/#/", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/VGGXRJ/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/VGGXRJ/", "attachments": []}, {"guid": "c729351f-871e-55de-b539-168030070ad4", "code": "VPACJY", "id": 95372, "logo": null, "date": "2026-08-29T17:20:00+02:00", "start": "17:20", "end": "2026-08-29T17:40:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-95372-adopt-your-town", "url": "https://pretalx.com/sotm2026/talk/VPACJY/", "title": "Adopt Your Town", "subtitle": "", "track": "Education", "type": "Talk", "language": "en", "abstract": "\u2018Adopt Your Town\u2019 is a workshop proposed for third-year high school pupils, to be conducted during the 2025/26 school year. The primary target of this initiative is not only to improve OpenStreetMap. This educational project aims to promote a sense of unity and cohesion among pupils and their local community.\n\nNovice users of OpenStreetMap have a different perspective and range of interests to more seasoned users. Consequently, the likelihood of acquiring new data increases. Eventually, this work outlines how the OpenStreetMap environment\u2019s tools can be used as Open Educational Resources (OERs).\n\nThe aim of this workshop is, firstly, to enhance participants\u2019 cartography skills and, secondly, focusing on the local community, to highlight aspects that are often overlooked by mainstream mapping services.\n\nMoreover, pupils have created tactile maps of the school campus to assist blind individuals. This was easily and efficiently done using the Touch Mapper tool.\n\nThe pupils were enthusiastic about the prospect of creating a map of their own town. They were surprised to discover a database of cartographic information similar to Wikipedia, and they became even more engaged when they realised that they could map a wide variety of subjects, such as trees, benches, and defibrillators. Furthermore, the workshop shifts the focus from commercial-oriented mapping to a more people-centred approach.\n\nEach pupil has identified an area of interest and explored it. Some examined their immediate environment, while others mapped all the beaches in the area, and some even mapped trees and street lamps. Furthermore, some pupils have added house numbers, which in Italy are located on every door and not on every building.\n\nThe project was made possible because, in Italy, all third-year high school pupils are required to do a practical project supervised by their teacher or tutor.", "description": "## Organization\n\nThe workshop was conducted at the \u2018Guglielmo Marconi\u2019 Scientific High School. In the Italian school system, each third-year pupil have to do a project involving real work. In this case, the project focused on mapping the Pesaro\u2019s municipality.\n\n### Task allocation\n\nThe first step of the project was an introduction to the fundamentals of OpenStreetMap, followed by the allocation of tasks. Each pupil selected items of own interest. However, the participants were encouraged to expand their work beyond the municipal level and map any other geographical areas of interest, such as their place of origin or their holiday destinations.\n\n### Platforms used\n\nDuring the workshop, the primary editor adopted was *iD*, a user-friendly application native to OpenStreetMap with a rapid learning curve.\n\nSecondly, it was recommended to use mobile applications such as *StreetComplete* and *Every Door*, the second especially due to its compatibility with iOS operating systems and because it can add tags during the upload.\n\nThe tag is important for the tutor because it helps to identify the team\u2019s contributions within the project.\n\n### Data collection\n\nThe *ResultMaps* platform was used to monitor pupils\u2019 work. ResultMaps is a suite of analytical tools that has become the de facto standard for monitoring and visualising activity and data quality. It provides insight regarding pupils\u2019 activity during workshops.\n\nEach changeset was monitored using the tag [#PCTOMarconi2026](https://resultmaps.neis-one.org/osm-changesets?comment=PCTOMarconi2026). The link opens a map covering a large area, because pupils have also mapped regions including the United Kingdom, Saudi Arabia, the Maldives and Algeria, where they were born or have lived. It is evident that the primary location of the workshop is the town of Pesaro (Italy), with a significant number of changesets having been recorded there.\n\nFor the purposes of this workshop, all the 25 pupils have created an account of OpenStreetMap. The tools *[Your OSM Heat Map](https://yosmhm.neis-one.org/)* and *[How did you contribute to OSM?](https://hdyc.neis-one.org/)* were used to display the area mapped by the pupils. Furthermore, *[Filtering OSM Changesets by a Specific Comment](https://resultmaps.neis-one.org/osm-changesets)* was used for measuring the global progress of the project and the average work of each pupil.\n\nEventually, the *[OSMfight](https://osmfight.neis-one.org/)* tool was adopted for the activity\u2019s gamification. This tool allows two pupils to compare their contributions. These activities are merely games, but they are useful for stimulating pupils in their mapping activities.\n\n## OpenStreetMap as OER\n\nThe *ResultMap* tools were used to monitor pupils\u2019 activity while they were working, and later to extract useful statistics and data. From this point of view, the tools can be considered an OER, as it provides educators with a robust toolkit for evaluating pupils\u2019 asynchronous work.\n\nAnother significant initiative that merits attention is the \u2018[Project of the Month](https://osmit-podoma.wmcloud.org/)\u2019, an instance of [Podoma](https://wiki.openstreetmap.org/wiki/Podoma) project. The Project of the Month is an informal initiative by the Italian community focused on a specific OpenStreetMap topic each month, subsequently discussed on the OSM Community Forum. This initiative is useful for encouraging pupils to work on a specific topic and to grow a sense of community with others OpenStreetMap users.\n\nFrom April 2025, the \u2018Project of the Month\u2019 will no longer be limited to individual tags but propose a general theme for the month\u2019s mapping, offering badges to those who contribute to the initiative, creating a gamification approach that increases user engagement.\n\nFurthermore, pupils have created tactile maps of the school campus to facility blind and visually impaired people. This was easily by [Touch Mapper](https://touch-mapper.org) tool which an example is [this](https://touch-mapper.org/en/map?map=B99a33b9cdfccd53), which was improved by helpful of association that are working in this field. This assistance was crucial for adding Braille information about buildings  and other areas providing a \u2018vision\u2019 to who cannot see.\n\n## Conclusions\n\nIn this workshop, the pupils discovered an alternative to the conventional mainstream mapping services. OpenStreetMap has a distinct cartographic philosophy, emphasising the principle of collective contribution.\n\nDuring the workshop, the pupils discovered that with the Open Data it is easy transform users into creators.\n\nEventually, Pesaro increased the number of map changes by 45,996 units during the first two months of the project. It is evident that pupils made mistakes in their work, but it should be noted that they have only recently started to mapping.\n\nTherefore, it is possible that not all pupils will continue to contribute to OpenStreetMap. However, a significant number of them are enthusiastic about it because they have discovered that, as an Open Database, OpenStreetMap is also theirs. They can improve it whenever they identify a missing or incorrect item.", "recording_license": "", "do_not_record": false, "persons": [{"code": "BE3R8M", "name": "Giacomo Alessandroni", "avatar": "https://pretalx.com/media/avatars/DCRWZC_rGjI77m.webp", "biography": "Giacomo Alessandroni is an IT and robotics teacher, fields in which he has a deep passion. He considers himself an electronics engineer dedicated to public education.\n\nHe has been an active mapper since 2009. He is the Wikimedia Italia Marche Region coordinator since 2021.\n\nThis school year he has proposed a map activity to his pupils: this is the topic of the talk.", "public_name": "Giacomo Alessandroni", "guid": "01c48ae8-a345-5e3f-9e7d-e181fe20d33f", "url": "https://pretalx.com/sotm2026/speaker/BE3R8M/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/VPACJY/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/VPACJY/", "attachments": []}, {"guid": "c4905d53-8872-57d8-b89b-76abcf36173d", "code": "BY7FZ7", "id": 96770, "logo": null, "date": "2026-08-29T17:55:00+02:00", "start": "17:55", "end": "2026-08-29T18:15:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-96770-the-power-of-quality-in-openstreetmap", "url": "https://pretalx.com/sotm2026/talk/BY7FZ7/", "title": "The Power of quality in OpenStreetMap", "subtitle": "", "track": "Data Analysis & Data Model", "type": "Talk", "language": "en", "abstract": "As OpenStreetMap becomes more mature and complete, the challenges now lie in ensuring data quality. Mappers may receive customised feedback on their contributions, and data reusers are seeking greater confidence in the information they rely on.\n\nOver the past year, we at [MapYourGrid](https://mapyourgrid.org/) have been working on assessing and improving the quality of power infrastructure data in OpenStreetMap. This work relies on existing quality assurance and monitoring tools, such as [Osmose](https://wiki.openstreetmap.org/wiki/Osmose) and [Podoma](https://wiki.openstreetmap.org/wiki/Podoma), with a quality comparison approach through a new platform, [GridInspector](https://mapyourgrid.dynartio.com/gridinspector.html).\n\nWith this talk, we aim to share with the community how we built a coherent quality assurance strategy. We will present our experience combining multiple tools, and show how automation can support continuous monitoring and business-grade consistency testing.\nWe will also explore what comes next: moving towards a highly automated quality assessment process for power infrastructure data. This includes leveraging Earth observation data and designing human-in-the-loop validation processes to balance automation with local knowledge and mapper expertise.\nWhile intended with power infrastructure data in mind, the methods we present are designed to be broadly used in many fields. Thus this presentation won\u2019t be dedicated to the power infrastructure topic but only use it as an example. In fact, we would love to discuss with the community how these tools and methods can be replicated to other fields (i.e. assessing data quality for waterways or road and urban infrastructures).   \n\nAttendees will leave with practical insights on building a QA strategy, leveraging existing tools more effectively, and designing feedback loops that benefit both contributors and data reusers.", "description": "Data quality is at the core of the digital age. It drives the value we got out of many fields documented in the OpenStreetMap database. \nMost volunteers pursue high quality contributions in order to accomplish great rendering. However, data quality remains a subjective topic.\n\nScientific work has already been done on the matter and established norms now define appropriate frameworks to assess data quality, particularly when it comes to geographical data.\nOpenStreetMap has the opportunity to build on these foundations and improve its own set of quality assessment tools to serve its community and to be taken as an example for a more global vision.\nIt all started from a practical need: when collaborating, contributors need meaningful feedback to improve their mapping. It then expands with the need to encourage more people to join the effort and drive them with common practice. It's also a matter of building trust for reusers who may rely on data they do not fully understand.\n\nThe time has come to create our own definition of quality and what matters in our respective fields. So what does quality actually mean in OpenStreetMap? \nIs this about completeness? Consistency? Or maybe accuracy? Could it be all of this at the same time?\n\nThe ecosystem already includes well known and used software:\n\n- [Osmose QA](https://wiki.openstreetmap.org/wiki/Osmose)\n- [Clearance](https://wiki.openstreetmap.org/wiki/Clearance)\n- Editors validation rulesets\n\nAnd it could also include more recent attempts you may have heard about:\n\n- [Podoma](https://wiki.openstreetmap.org/wiki/Podoma)\n- [GridInspector](https://mapyourgrid.dynartio.com/gridinspector.html)\n- Many external software consuming OpenStreetMap data\n\nThose tools may suffer from lack of maintenance, visibility, or integration, and could benefit from renewed interest and coordination around quality monitoring. \n\nBut quality tooling is not enough if it\u2019s not properly used and understood. It's also about strategies, insights and shared practices between members of the community.\n\nBuilding on our experience at MapYourGrid, we want to share a practical vision of what quality monitoring can look like. \nWe will use concrete situations we faced and explain what value came from monitoring and automating problem detection.\n\nHere are the points we will make:\n\n- Explain what quality topics we focus on\n- Describe what situations we faced with concrete situations from MapYourGrid\n- Quantify what value came out of monitoring and automated problem detection at world scale\n- Spot what features are currently missing in our common tools\n- Explore solutions and set resources to get them included in the future\n\nWe welcome anyone who shares the same concern about quality in their own field and we are confident we could find the appropriate path together.", "recording_license": "", "do_not_record": false, "persons": [{"code": "XFAQEP", "name": "Fran\u00e7ois Lacombe", "avatar": "https://pretalx.com/media/avatars/YSNJ3U_HAwoFLh.webp", "biography": "I'm 36. OpenStreetMap got me busy for 15 years now, mainly about infrastructures and public utilities topics. It began as a hobby prior becoming a game changer in my professional background. I'm involved in mapping mainly in France and interested in tagging development as well. Crowdsourcing very important knowledge thrills me to tackle crucial challenges like energy transition or climate change resilience. Sustainability, open source, open data and common good are also additional motivations to collaborate withing this community.", "public_name": "Fran\u00e7ois Lacombe", "guid": "538dca11-eaa8-556f-8d57-6460db7bebd9", "url": "https://pretalx.com/sotm2026/speaker/XFAQEP/"}, {"code": "FXXZDV", "name": "Marina Petkova", "avatar": "https://pretalx.com/media/avatars/CAUAZY_pBDYKmu.webp", "biography": "Hello, I'm Marina ! \n\nI contribute to OpenStreetMap both as a volunteer and professionally. \n\nI am based in France, where i co-founded the company [Dynartio](https://dynartio.com/). \nWe focus on tooling and data analysis for circular economy and territorial resource flows. \nWe use OpenStreetMap, both as contributors and as practitioners.\n\nI am member of the [FPOSM](https://fposm.fr/), and the [MapYourGrid](https://mapyourgrid.org/) initiative.\n\nYou can find me [here](https://www.openstreetmap.org/user/map-dynartio), [here](https://wiki.openstreetmap.org/wiki/User:Map-dynartio), or [here](https://www.linkedin.com/in/marinapetkova/).", "public_name": "Marina Petkova", "guid": "da6880f2-afb4-5dda-b875-9c37e957bea3", "url": "https://pretalx.com/sotm2026/speaker/FXXZDV/"}, {"code": "8KPDNY", "name": "Tobias Augspurger", "avatar": "https://pretalx.com/media/avatars/ZSP93H_63DB3Il.webp", "biography": "Tobias Augspurger, is an aerospace engineer and atmospheric scientist working to support open-source solutions in climate and energy. He contributes to projects like OpenSustain.tech, an initiative helping surface and connect climate-tech communities, and is involved in collaborative funding and transparency efforts such as OpenClimate.fund. At the J\u00fclich Research Center, he focuses on remote sensing and software development for environmental research. Through Open Energy Transition, he helps improve global open data on power grids to support equitable energy access. Tobias values working with diverse contributors to foster transparency, reduce greenwashing, and enable practical, trustworthy climate action.", "public_name": "Tobias Augspurger", "guid": "801ccf17-4331-58af-b6a6-bbf1e5ae20ec", "url": "https://pretalx.com/sotm2026/speaker/8KPDNY/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/BY7FZ7/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/BY7FZ7/", "attachments": []}], "La R\u00e9union": [{"guid": "a9614cba-4252-5c5e-8a36-b9b8dd54a7ee", "code": "X7EKQG", "id": 96902, "logo": null, "date": "2026-08-29T09:30:00+02:00", "start": "09:30", "end": "2026-08-29T09:50:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-96902-reviewing-osm-changes-before-integration-introducing-lebontag", "url": "https://pretalx.com/sotm2026/talk/X7EKQG/", "title": "Reviewing OSM Changes Before Integration: Introducing LeBonTag", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "LeBonTag is an open-source web application that allows organizations to review OpenStreetMap changes before integrating them into their own datasets.\n\nOriginally initiated by Montpellier M\u00e9diterran\u00e9e M\u00e9tropole to support its internal data workflows, LeBonTag enables a human-in-the-loop process to monitor, inspect, and validate OSM edits before integration.", "description": "OpenStreetMap is increasingly used as a data source in operational contexts. However, directly integrating upstream changes into downstream databases can lead to inconsistencies or unwanted modifications.\n\nLeBonTag is an open-source tool designed to introduce a validation step between OpenStreetMap and external systems. It was initially developed in collaboration with Montpellier M\u00e9diterran\u00e9e M\u00e9tropole, which needed a way to safely integrate OSM data into its internal workflows.\n\nInstead of automatically importing changes, users can review and decide which edits should be accepted.\n\nIn this talk, we will present:\n\n- The problem of uncontrolled OSM data integration\n- How LeBonTag allows users to visualize and review OSM changes\n- The validation workflow: inspecting objects, accepting or rejecting edits\n- An overview of additional modules, such as a data quality module used to check tags, geometry, or consistency on OSM objects\n- Feedback and lessons learned from real-world usage\n\nLeBonTag is designed as a modular platform, where different tools can support various needs around OSM data. Other modules, such as statistics or analysis tools, can be developed within the same framework.\nOther local french administrations have participated to the improvement of the software (Brest, FireDpt H\u00e9rault, Paris, Clermont).\n\nThis session focuses on a practical approach to working with\nOpenStreetMap: combining automation and human validation to ensure data quality and consistency before integration.\n\n**Key takeaways**\n\n- Why reviewing OSM changes before integration can be important\n- How to implement a human-in-the-loop validation workflow\n- How modular tools can support different OSM data use cases\n- Practical insights from building and using a real-world tool", "recording_license": "", "do_not_record": false, "persons": [{"code": "CXNJNX", "name": "Bruno B\u00e9guin", "avatar": null, "biography": "I am a geomatics project manager at Montpellier M\u00e9tropole, specializing in public spaces.\nOur road network database, along with a wide range of specialized data (accessible parking spaces, etc.) and our city map, are sourced from OSM.\nWe manage and import this data using the LeBonTag software, and we are now introducing version 2.", "public_name": "Bruno B\u00e9guin", "guid": "435a87ea-7fdc-549a-8979-939b1b599d5b", "url": "https://pretalx.com/sotm2026/speaker/CXNJNX/"}, {"code": "KEALUU", "name": "Mathieu Ambrosy", "avatar": null, "biography": "I founded Geonov in 2017 to help my clients address their geographic data processing challenges using tools such as FME, PostgreSQL, and QGIS.\nGeonov responded to a call for proposals from Montpellier M\u00e9diterran\u00e9e M\u00e9tropole to develop LeBonTag, a modular tool for integrating OpenStreetMap data.\nIn 2025, version 2 of the tool was developed.", "public_name": "Mathieu Ambrosy", "guid": "fc6ddccf-ee83-533d-8098-fa0e562c08e4", "url": "https://pretalx.com/sotm2026/speaker/KEALUU/"}], "links": [{"title": "LeBonTag Documentation", "url": "https://documentation.lebontag.fr/", "type": "related"}, {"title": "LeBonTag Git", "url": "https://gitlab.com/Geonov/lebontag-v2", "type": "related"}, {"title": "Geonov Website", "url": "https://www.geonov.fr/", "type": "related"}, {"title": "LeBonTag Website", "url": "https://www.lebontag.fr/", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/X7EKQG/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/X7EKQG/", "attachments": [{"title": "Slides (PDF)", "url": "/media/sotm2026/submissions/X7EKQG/resources/SOTM2026-LeBonTag_TunjURh.pdf", "type": "related"}]}, {"guid": "ac18201d-6db7-55f8-b7fa-8b7a5f8f7896", "code": "QJJS3X", "id": 96921, "logo": null, "date": "2026-08-29T10:05:00+02:00", "start": "10:05", "end": "2026-08-29T10:25:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-96921-creating-maps-for-the-outdoors-community-in-france-successes-and-challenges", "url": "https://pretalx.com/sotm2026/talk/QJJS3X/", "title": "Creating maps for the outdoors community in France: successes and challenges", "subtitle": "", "track": "Mapping", "type": "Talk", "language": "en", "abstract": "The Outdoors Group in France has a selfish purpose: help create OSM-based maps that we and our fellow outdoors practitioners and professionals can safely use to plan and carry out our favorite activities.  We are end users, originally mostly hikers and mountain bikers, who came to OSM to create better maps and who discovered on the way that this will require other classes of end users to adopt OSM or at least find their way around it: route operators, tourism offices, land managers, mountain rescue services, etc.\n\nThis talk reports on our collective successes and remaining challenges  in turning OSM-based maps into reliable and safe maps for outdoors activities in France and onboarding other end-users. Successes include going from zero to 30.000 km of node networks in a few years, maintaining route continuity above 90% on ~200.000 km of hiking routes, and starting collaborations with a few route operators. The challenges that we report on include better engagement of various categories of end users such as local institutions and land managers. Analyzing these challenges directs us toward  a few irritants that we need to manage to make OSM more inclusive towards them; this includes some mapping principles and semantic models in OSM, the need for better tooling for relation management, and perhaps additional governance bodies.\n\nIn addition to reporting on our successes and remaining challenges, the goal of this talk proposal is also to recruit participants for a BOF session with outdoors mappers and map developers from other countries, possibly with an actual outdoors mapping session in or near Paris", "description": "_The talk will present the French Outdoors group and its approach to contributing that makes it end-user-centric in various ways. The talk will illustrate its successes in making OSM a significant player for outdoors maps in France. It will describe the remaining challenges that we'd like to discuss with the community, particularly outdoor mappers from other countries and application developers. We hope to have mountain professionals present for the talk, and our goal is to recruit participants for a BOF session on tagging and modeling improvements that would help us meet our remaining challenges._ \n\nThe group emerged in 2021 as a bunch of hikers and mountain bikers who felt  that OSM had the potential to support better maps and new digital solutions for our activities. We started organizing ourselves, reaching out to other contributors, creating a Telegram channel and a Matrix room,  and launching initiatives. Today the group includes mountain professionals, tourism professionals, geographical information system managers in various institutions, etc. Some historical OSM contributors also observe our topics and how we address them.\n\nBeing end-users before being contributors, we follow community rules and principles but we care more about results (maps that we can use, data obtained, etc) than about advocating principles. This helps us focus, but also to sympathize with other end-user groups: tourism offices trying to attract hikers, natural reserves trying to protect endangered species, mountain rescue services complaining about trusting inaccurate maps, operators seeking solutions to manage their equipments..\n\nOur successes, following previous works by countless contributors, make OSM a contender when selecting a hiking map. They include:\n- an in-depth understanding of the hiking ecosystem and its many moving parts, which makes for various end-users that need engaging;\n- the refinement of how to engage the different types of end-users and address their concerns, so as to obtain more data;\n- progress from sketchy hiking and biking maps, compared to neighboring countries, to ~95% of continuous routes, thanks to QA tools such as Knooppuntnet and Waymarkedtrails\n- the mapping of ~30.000 km of node networks, of pilgrimage routes, of a significant number of local routes;\n- new features in renderers, e.g. forest compartments;\n- a contribution to the cartes.app outdoors style, that both appeals to French end users and serves as a sandbox for experimenting with modeling.\n\nThese successes make talks growingly easier with various end-users, but not enough yet to start a virtuous circle and stabilize OSM as the best ecosystem for outdoors maps. Among the few challenges that we are working on: \n\n- there are too many routes, changing too often, for us to maintain. We must find how a significant fraction of the ~3000 route French operators can update \"their\" routes themselves. We get in touch, convince them to publish data, help them do so, then try and convince them to become regular contributors... and fail. Whereas we are eager enough to learn the OSM tools and culture, they are not. We need to make OSM more inclusive for them, creating new tools if necessary, and maybe convincing the community to adapt some principles or practices;\n\n- reaching 100% quality is currently impossible because of mismatches between the OSM tagging model and the designs chosen by route operators. For instance, there are dozens of \"routes\" designed as networks of loops, sometimes disconnected from each other, and we cannot reflect the designer's intention without triggering false alarms in QA systems. More general modeling can be designed but consensus will require comparing notes with other countries;\n\n- one to two routes are broken every day by other contributors who are not notified of the consequences of their changes. All editing tools are concerned, and we need to campaign for better support for relation integrity in at least JOSM and iD. History management is also an issue for relations, making it hard to find when and how a relation has been broken. Until then, we reach a plateau where contribution time is goes more to maintenance and less to new projects;\n\n-  more and more land owners or local authorities create accounts for deleting ways, and who end up in conflict with traditional contributors. Finding rendering rules that satisfy everybody and popularizing them among map developers remains a challenge; communicating these rules to land owners and local authorities will be an even greater challenge;\n\n- more and more mountain incidents involve OSM-based maps. To avoid bad press,  we need to create efficient processes with mountain rescue services and mountain federations so as to modify problematic ways. To stabilize the situation we may need the new tags about non-paths, scrambling routes, etc that have been discussed but not concluded upon in the last years.\n\nHopefully some of these challenges will provide a basis for an interesting BOF session after the talk.", "recording_license": "", "do_not_record": false, "persons": [{"code": "FDKVBU", "name": "StC", "avatar": null, "biography": "Good hiker, good skier, bad climber, occasional biker, ex-pilot. More than 50 years in love with national topographic maps, now in a polyamory with OSM topographic maps. Mapping in OSM out of civic duty, as an end user scratching the collective itches of the outdoors community, and with a touch of professional interest. I also have a work life where computer science, software architecture, design thinking, entrepreneurship, innovation management, and public policy have all played a role.", "public_name": "StC", "guid": "d9f90111-93ba-5fd2-9147-a5d71c66b516", "url": "https://pretalx.com/sotm2026/speaker/FDKVBU/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/QJJS3X/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/QJJS3X/", "attachments": []}, {"guid": "9ac70ab8-f7d3-5d2f-a2f2-f4508c5682cc", "code": "E3WQWG", "id": 96754, "logo": null, "date": "2026-08-29T11:15:00+02:00", "start": "11:15", "end": "2026-08-29T11:35:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-96754-a-swiss-army-knife-for-geographical-data-voxelization", "url": "https://pretalx.com/sotm2026/talk/E3WQWG/", "title": "A Swiss Army knife for geographical data voxelization", "subtitle": "", "track": "Cartography", "type": "Talk", "language": "en", "abstract": "Over 10 years ago, the French Institute of Geographic Information (IGN) created \"Minecraft on demand\", a web service that uses real geographical data to build playable worlds for voxel games such as Minecraft (worlds made of small unit cubes). After 135,000 voxel world generations, including more than 6,000 from OSM data, the service turned out to be limited, missing flexibility and using only a small fraction of OSM data. The institute capitalized on its experience to design a new standalone and flexible tool able to exploit the full richness of OSM data and much more.\n\nAs many generation constraints as possible have been removed. For instance, size of created world is only limited by game format and not anymore by memory size. The extremely high configurability makes this tool very versatile. Decisions are driven by the user\u2019s creativity and not by the software. All the tasks, ranging from data loading, processing, all the way to rendering are described through a human readable configuration file, so that even non-programmers can easily fine-tune their pipeline. This new tool can be seen as the \"Swiss Army knife\" of geographical data voxelization (conversion of data into voxel worlds).\n\nThe tool is open source, modular and can be extended with Java modules. It paves the way for new community-maintained features, such as support for new geographical data formats, processing algorithms, or voxel formats. Consequently, the tool has the potential to natively manipulate any type of data (vector, raster, point cloud...) originating from any provider (OSM Overpass, OGC WFS/WMS, local files...), process it in various ways, and create any voxel-based format as a result (Luanti, Minecraft, Lego...). For instance, it is possible to create a Luanti world with terrain elevation imported from OpenDEM, and any feature from OSM (road network, buildings, land use...).\n \nWhile most of the existing tools are focused on \"fun\" or educational usages, this one makes no assumption about the user's intent, and can be used for any purpose, including:\n- Immersive exploration (e.g. for citizen participation)\n- Rebuild in context (e.g. of a monument)\n- Thematic rendering (e.g. based on a tag such as restaurant's cuisine)\n- Mixing/custom sources (e.g. with local files)\n- And many more to discover!", "description": "During our presentation, we will showcase the versatility and potential of our new tool.\n\nAfter providing context on our project, we will present a quick state of the art of existing geodata voxelization tools (Arnis, VoxelEarth\u2026), their limits, and how our contribution overcomes them. We will show examples of generated worlds, the corresponding pipeline configuration, and the impact of the user\u2019s choices on the worlds. Consequently, we will illustrate the potential of our new tool through new possible usages and applications, and will finally, conclude by presenting the next key steps of the project.\n\nThe examples we will show include:\n- A complete pipeline fetching some features from OSM using Overpass and rendering them in Luanti (free and open-source voxel game engine)\n- Modifying the rendering of a feature\n- Adding a new data source from local file\n- Changing the processing of a feature\n- Changing the output format to make a Minecraft world instead\n- Moving the area into another country\n- Another pipeline mixing several data sources (both local and from multiple providers)\n\nWe choose to present at the State of the Map 2026 event for multiple reasons. First and most obvious, our tool can handle OSM data, making it logical to introduce it to the OSM community. Second, we believe that the \"open\" philosophy we have in mind for this tool (released under the AGPL license) matches well with the spirit of the OSM community. Last, the timing of this event is particularly well aligned with our project's timeline, and we believe that the timing is perfect time for the community members interested in this topic to join us!", "recording_license": "", "do_not_record": false, "persons": [{"code": "NTXF9E", "name": "Pierre-Yves Rollo", "avatar": "https://pretalx.com/media/avatars/9SBLAV_pNgMSiy.webp", "biography": "French developer. 8/16/32/64 bits compatible.\nI also do some photography and try to write texts.\nI've been doing urban exploration before the Y2K bug, and a bit after.\nContributed to Luanti/Minetest project (core & mods). Still developing some mods.\nWorking at french mapping institute (IGN) since 2023.", "public_name": "Pierre-Yves Rollo", "guid": "1ce3cf45-8f0c-54e3-a9fb-a4d21dcd714f", "url": "https://pretalx.com/sotm2026/speaker/NTXF9E/"}, {"code": "MNUXPF", "name": "Th\u00e9o SZANTO", "avatar": "https://pretalx.com/media/avatars/GHC9E3_OrB37wa.webp", "biography": "French PhD student working at the LASTIG lab (Univ Gustave Eiffel, G\u00e9odata Paris, IGN, LASTIG, F-77454 Marne-la-Vall\u00e9e, France).\nPassionate by computer science and sandbox games like Minecraft.\nI also play tennis regularly for fun, and sometimes in competition.\nMaintained a Minecraft server network during 7 years, and now contributing to some open-source projects in the Minecraft ecosystem.", "public_name": "Th\u00e9o SZANTO", "guid": "bc58ce41-8b96-5a88-b0ec-dc19b9e5e511", "url": "https://pretalx.com/sotm2026/speaker/MNUXPF/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/E3WQWG/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/E3WQWG/", "attachments": []}, {"guid": "f957f913-d501-5967-b81c-2dd6380c3930", "code": "XQUCJM", "id": 93675, "logo": null, "date": "2026-08-29T11:50:00+02:00", "start": "11:50", "end": "2026-08-29T12:10:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-93675-osm2world-3d-models-from-openstreetmap-data", "url": "https://pretalx.com/sotm2026/talk/XQUCJM/", "title": "OSM2World: 3D models from OpenStreetMap data", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "OSM2World is an open source tool which produces detailed 3D models from OpenStreetMap data. In some parts of the world, OSM has reached the necessary level of detail for rich 3D scenes, containing outdoor and indoor views of buildings, roads with lane details, urban infrastructure, and many other elements.\n\nThis talk introduces the capabilities of OSM2World, with a particular focus on features which were added recently. These include:\n\n* The new **web frontend** which lets you try out OSM2World without a local installation\n* Easy to use **3D tile generation** and greatly improved **glTF support**\n* Additional backends such as **GeoDesk** and **OSM JSON**\n* The **library interface** which makes it easy for applications on the JVM or in the browser to integrate OSM2World's capabilities.\n\nWe will also explore use cases of OSM2World in different domains. The session is intended to be suitable for visitors learning about OSM2World for the first time as well as those interested in staying up-to-date about new developments.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "WPGJEA", "name": "Tobias Knerr", "avatar": "https://pretalx.com/media/avatars/PDWBJL_Ga7W0Ml.webp", "biography": "[Tobias](https://tobias-knerr.de/) is a freelance software developer and open-source maintainer, with a long-standing passion for open data and OpenStreetMap. Since 2008, he has contributed to OSM in many roles, including mapper, software developer, proposal author, conference speaker and organiser, and former member of the OpenStreetMap Foundation board. Today, his main area of interest is 3D rendering using OSM data, and he maintains the OSM2World project.", "public_name": "Tobias Knerr", "guid": "24daaaf0-21a2-5803-9369-0b8e9b13c661", "url": "https://pretalx.com/sotm2026/speaker/WPGJEA/"}], "links": [{"title": "OSM2World Website", "url": "http://osm2world.org/", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/XQUCJM/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/XQUCJM/", "attachments": [{"title": "Slides (PDF)", "url": "/media/sotm2026/submissions/XQUCJM/resources/OSM2World_SotM_26_2xLsQo4.pdf", "type": "related"}]}, {"guid": "7831a10b-36b9-57df-8635-91fe774e2472", "code": "YEGCPU", "id": 96922, "logo": null, "date": "2026-08-29T12:25:00+02:00", "start": "12:25", "end": "2026-08-29T12:45:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-96922-immersing-panoramax-in-the-3d-world", "url": "https://pretalx.com/sotm2026/talk/YEGCPU/", "title": "Immersing Panoramax in the 3D world", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "Street-level imagery has a huge potential for OpenStreetMap mappers. Panoramax is a project to collect and manage street-level imagery, implemented as free and opensource software. It allows the crowdsourcing of images, which are then usually openly licensed.\n\nNowadays, Panoramax allows 2D images management and visualization : images are located at a specific location, and displayed in a 2D visualization widget.\n\nWe are working on **full 3D support for Panoramax** : enabling point cloud visualization and images simultaneously, integrating panoramic images or oriented images inside the 3D world, and adding 3D visualization capabilities to Panoramax.\n\nWe present the current state of work and what this new approach opens in terms of new usages for OSM mappers.", "description": "In this presentation, we detail the work we are carrying out for 3D support inside Panoramax. We will start with a quick description of Panoramax and current limitations for end users.\n\nThen we will talk about the goals we pursue :\u00a0adding 3D capabilities to Panoramax, and enabling new usages for mappers.\n\nWe detail the architecture we designed, how 3D capabilities will be added to the Panoramax platform, technical choices we made, and the link between Panoramax data, images, trajectories and OpenStreetMap.\n\nWe then demo the current state of the development, before discussing further steps and new use cases for all mappers.", "recording_license": "", "do_not_record": false, "persons": [{"code": "MZPJSG", "name": "Vincent Picavet", "avatar": "https://pretalx.com/media/avatars/7ZEMX9_5Vqe8zS.webp", "biography": "Vincent Picavet is an applied maths engineer originally. Involved in OpenSource and OpenData movements since the beginning of the 21st century, he founded Oslandia in 2009, providing services for OpenSource GIS in general and particularly around QGIS. Vincent regularly talks at national and international conferences on topics related to Spatial data, Free Software and GIS.", "public_name": "Vincent Picavet", "guid": "8fbe26e3-6fbc-5383-859e-2fd49dec1a5e", "url": "https://pretalx.com/sotm2026/speaker/MZPJSG/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/YEGCPU/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/YEGCPU/", "attachments": []}, {"guid": "d54260d1-3488-5888-9d48-06f114849a11", "code": "GXXCFE", "id": 96936, "logo": null, "date": "2026-08-29T14:30:00+02:00", "start": "14:30", "end": "2026-08-29T15:30:00+02:00", "duration": "01:00", "room": "La R\u00e9union", "slug": "sotm2026-96936-why-do-you-contribute-to-osm", "url": "https://pretalx.com/sotm2026/talk/GXXCFE/", "title": "Why do you contribute to OSM?", "subtitle": "", "track": "Community and Foundation", "type": "Panel", "language": "en", "abstract": "This panel discussion is about understanding motivations and objectives behind everyone's journey with OpenStreetMap. The goal of the panel discussion is to collect ideas and suggestions to draft a survey to be disseminated among the whole OSM community and better understand what motivates mappers to do what they do best!", "description": "This panel discussion is about understanding motivations and objectives behind everyone's journey with OpenStreetMap. The panel will be held in a very interactive fashion, in which participants will be welcomed and prompted to participate to the discussion. The presenter will act as moderator of the panel, bringing the hand mike across the room.\n\nThe goal of the panel discussion is to collect ideas and suggestions to draft a survey to be disseminated among the whole OSM community and better understand what motivates mappers to do what they do best (i.e. contributing to OSM!). The survey would circulate for the following months, in order to present results supposedly during the next SotM. Ideally, the survey will enable understanding of motivation differences, if any, among different classes of mappers (e.g. studying correlation on variables as OSM user lifetime and activity, age, continent of provenance, OSMF membership etc). \n\nDuring the panel, some topics and initial ideas will be shared to start with, and build on top of the ongoing conversation. As an example...\n- Why do you map on OSM?\n- What do you mean by contributing to OSM?\n- What do you think is the main motivation of other OSM contributors?\n- What stops or demotivates you to contribute (more) to OSM?\n- What do you think brings a positive impact to the OSM community?\n\nIdeally, the building of the survey will continue after the panel by gathering comments and suggestions through OSM Community Forum, to be eventually published and disseminated shortly after.", "recording_license": "", "do_not_record": false, "persons": [{"code": "XWZUPE", "name": "Michael Montani", "avatar": "https://pretalx.com/media/avatars/XQNVGT_7mF9RyW.webp", "biography": "Michael is an OSM contributor since 2016 and currently works as Software Engineer at the European Commission Joint Research Centre. For the past 6 years, he worked for the United Nations Global Service Centre where he brought OpenStreetMap to UN Secretariat, Agencies and Peacekeeping missions. Previously he was 2018 YouthMappers Research Fellow and co-founder of PoliMappers, the first European chapter of YouthMappers. Over the years, he trained thousands of new OSM contributors from universities and local communities worldwide, especially in Africa and Europe.", "public_name": "Michael Montani", "guid": "761ed4b0-3543-57fd-b419-25a3c0350797", "url": "https://pretalx.com/sotm2026/speaker/XWZUPE/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/GXXCFE/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/GXXCFE/", "attachments": []}, {"guid": "df477763-6fc5-5ce2-b011-9ec1f537a783", "code": "GFUTGL", "id": 97018, "logo": null, "date": "2026-08-29T15:40:00+02:00", "start": "15:40", "end": "2026-08-29T16:00:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-97018-tous-ego-university-mapping-project-for-accessibility", "url": "https://pretalx.com/sotm2026/talk/GFUTGL/", "title": "\"Tous EGO\" University mapping project for accessibility", "subtitle": "", "track": "User Experiences", "type": "Talk", "language": "en", "abstract": "Our university won a call for proposals from the French ministry of higher education, research and space, to develop program regarding disability and inclusion in higher education and created the [\u201cTous EGO\u201d](https://www.univ-brest.fr/fr/page/tous-ego-ensemble-pour-grandir-et-ouvrir) program.\nOne of the initiatives is the [university mapping project](https://blogs.univ-brest.fr/ubo-durable/2025/11/18/tous-ego-cartographions-notre-universite/), to help students navigate the campus, especially those with disabilities. The decision was made to use OpenStreetMap, to create an interactive map of the university, indoor and outdoor, thanks to [Teritorio](https://www.teritorio.fr/en/) a french commercial enterprise in the social and solidarity economy providing us technical solutions using OpenStreetMap.", "description": "It would be a pleasure for me to present the university mapping project of the UBO - Universit\u00e9 de Bretagne Occidentale (Brest, France). Our university won a call for proposals from the French ministry of higher education, research and space, to develop projects regarding disability and inclusion in higher education and created the [\u201cTous EGO\u201d project](https://www.univ-brest.fr/fr/page/tous-ego-ensemble-pour-grandir-et-ouvrir) - which roughly translates to \u201cAll Together to Grow and Open\u201d ).\nThe aim is to support students with disabilities in all aspects of their academic experience by changing dynamics inside our university\u2019s governance structure, working on the educational aspect of studies, and improving life on campus. \n\nOne of the initiatives is the [university mapping project](https://blogs.univ-brest.fr/ubo-durable/2025/11/18/tous-ego-cartographions-notre-universite/), to help students navigate the campus, especially those with disabilities. The decision was made to use OpenStreetMap, to create an interactive map of the university, indoor and outdoor, thanks to [Teritorio](https://www.teritorio.fr/en/) , a french commercial enterprise in the social and solidarity economy providing us technical solutions using OpenStreetMap.\nUsing OSM has allowed us to create a community around the contributors helping by participating in mapping events or hearing about the project and students as well as university staff and professors.\n\nFurthermore, we are heavily documenting the project, as for all the \u201cTous EGO\u201d projects, we follow a demonstrative model, so that other universities or structures can replicate them and get the best possible result. \n\n\nIn this project, we are mainly working on indoor mapping, which is still a growing use of OSM. Which means points of interest are rooms, lecture halls, offices, reception desks and put into categories like faculties, departments or research labs. Of course, we are also focusing on accessibility: is there tactile paving, are toilets accessible, where are the elevators or is this room equipped with a hearing loop system for deaf people?\nDue to the fact that indoor mapping is in construction, we are encountering issues with tagging, or using tools like JOSM and QGIS that we had to improve by creating .mapcss files, presets or plugins\u2026  We are finding solutions, working with the OSM community in France and internationally, and trying to improve ways to map indoors.", "recording_license": "", "do_not_record": false, "persons": [{"code": "WVEFZ9", "name": "Gwena\u00eblle Chalm", "avatar": "https://pretalx.com/media/avatars/YQKF8A_9dCvrPT.webp", "biography": "I work at the UBO (\"Universit\u00e9 de Bretagne Occidentale\", Brest, France). as part of the university's mapping project for the \"Tous EGO\" program. Being disabled myself, I first joined the project as a student and was offered a position. That's how I discovered OpenStreetMap and being curious, I investigated and found an amazing platform with the potential to make life easier for us all. \nMy academic journey lead me from the scientific field to languages (german), and I stumbled on this project during my last year in public administration.", "public_name": "Gwena\u00eblle Chalm", "guid": "538ea20b-d3b3-57d0-a292-2cb6c6c00f87", "url": "https://pretalx.com/sotm2026/speaker/WVEFZ9/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/GFUTGL/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/GFUTGL/", "attachments": []}, {"guid": "d27da7a7-8d71-534b-b070-b8c10f46dea2", "code": "7Z7PZM", "id": 96799, "logo": null, "date": "2026-08-29T16:45:00+02:00", "start": "16:45", "end": "2026-08-29T17:25:00+02:00", "duration": "00:40", "room": "La R\u00e9union", "slug": "sotm2026-96799-text-with-a-purpose-building-the-image-of-the-world-for-blind-users-through-structured-and-complete-poi-data", "url": "https://pretalx.com/sotm2026/talk/7Z7PZM/", "title": "Text with a purpose - building the image of the world for blind users through structured and complete POI data", "subtitle": "", "track": "User Experiences", "type": "Extended Talk", "language": "en", "abstract": "In this session the topic of OSM POI data and its usefulness for blind navigation users will be explored. Through examples ranging from height of buildings, inscriptions of monuments and random facts dropped in editor's notes, the participants will discover how complete POI data contributes to a more accessible and inclusive world.\nAccessible mobile tools and strategies allowing for access to POI data and navigation will be presented, followed by a discussion of   possible improvement scenarios for greater participation of the blindness community in the consumption and creation of OSM data. Examples of such strategoes might include accessible mapping tools, additional tags and mapping categories and inclusion into local OSM communities.\nParticipants will leave the talk equipped with knowledge on how their work within the OSM community contributes to improved mobility for persons with disabilities. They will also gather ideas for reflection on the state of OSM data globally and strategies to make local communities a place where new meaningful connections revolving around the common goal of creating open data can be forged.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "CQCTHC", "name": "Pawel Masarczyk", "avatar": null, "biography": "A digital accessibility consultant by day, a keen explorer of Vienna by night, I profit heavily from the wealth of data provided by OSM. In my free time, I enjoy exploring different languages and cultures, podcasting and radio and of course travelling!\nAt the conference I hope to connect with experienced OSM contributors and software developers to deepen my knowledge on how open data can help me improve my understanding of the world.", "public_name": "Pawel Masarczyk", "guid": "fc0a17d5-f643-5f02-b210-6bdb5a06877d", "url": "https://pretalx.com/sotm2026/speaker/CQCTHC/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/7Z7PZM/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/7Z7PZM/", "attachments": [{"title": "Presentation Slides", "url": "/media/sotm2026/submissions/7Z7PZM/resources/Text_with_a_purpo_4liK2lo.pdf", "type": "related"}]}, {"guid": "46280a28-60bc-5006-955d-aacb77d35110", "code": "NHDJM3", "id": 96900, "logo": null, "date": "2026-08-29T17:55:00+02:00", "start": "17:55", "end": "2026-08-29T18:15:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-96900-search-and-find-what-you-are-looking-for", "url": "https://pretalx.com/sotm2026/talk/NHDJM3/", "title": "Search and find what you are looking for", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "Geocoders APIs are usually generalised to return results that are good enough for most people. In this talk we want to talk about how to create a geocoder that is specialized for your use case and returns results that are best for your users. The talk introduces the newest features of the Photon geocoder and shows how they can be used to easily set up a truly customized search engine. We'll explain along the way the basic principles how a geocoder does its job and\nwhat kind of data it needs to do it.", "description": "Search boxes are an integral part of any website that works with geo-aware data. Often the search box is even the very first element with which the users interact. And yet, very little attention is given to the results presented there. The results from some generic geocoding service are just good enough. With the recently released Photon 1.0. it becomes much easier to set up a customized search service that allows to focus on the results that are actually relevant for the users of your website.\n\nThis talk introduces the new Photon and shows different ways how you can customize your installation, so that they better fit your use case. We'll explain along the way the basic principles how a geocoder does its job and what kind of data it needs to do it. This will allow you to better understandthe results you get and how to improve them.", "recording_license": "", "do_not_record": false, "persons": [{"code": "8HRLFP", "name": "Sarah Hoffmann", "avatar": null, "biography": "Sarah is a long term contributor to OSM. She started mapping in 2008, mostly having fun hiking through the Swiss mountains and mapping all the trails. Then she became increasingly involved with the programming side of OSM. She is now maintainer for waymarkedtrails, pyosmium, osm2pgsql, photon and Nominatim. She makes a living as a free-lance software developer.", "public_name": "Sarah Hoffmann", "guid": "e1c1a0d9-ab8e-5345-bf22-d04a55bc4507", "url": "https://pretalx.com/sotm2026/speaker/8HRLFP/"}], "links": [{"title": "Photon database and JSON downloads", "url": "https://download1.graphhopper.com/public", "type": "related"}, {"title": "Photon Github", "url": "https://github.com/komoot/photon", "type": "related"}, {"title": "Photon demo server", "url": "https://photon.komoot.io/", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/NHDJM3/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/NHDJM3/", "attachments": [{"title": "Slides", "url": "/media/sotm2026/submissions/NHDJM3/resources/photon-talk-sotm2_Fn4DLA1.pdf", "type": "related"}]}], "Corse": [{"guid": "b8114bf7-cf22-531f-8d92-6fa61382b0f2", "code": "8SKDAR", "id": 96864, "logo": null, "date": "2026-08-29T09:30:00+02:00", "start": "09:30", "end": "2026-08-29T09:50:00+02:00", "duration": "00:20", "room": "Corse", "slug": "sotm2026-96864-osm-skeleton-completing-the-backbone-of-osm-data", "url": "https://pretalx.com/sotm2026/talk/8SKDAR/", "title": "OSM Skeleton: Completing the Backbone of OSM Data", "subtitle": "", "track": "Mapping", "type": "Talk", "language": "en", "abstract": "This presentation introduces a new step-by-step approach that aims at helping to fix the incompleteness and heterogeneity of the OSM data. \nIt first focuses on the OSM features that comprise the backbone of homogeneous OpenStreetMap data, before broadening the perspective to include other objects: the nodes representing settlements, the main road connecting them to the main road network, as well as the residential area showing the extent of the settlement.\nThe OSM Skeleton project aims to identify all missing, inaccurate, incomplete, or obsolete objects in the OSM data backbone in order to resolve inconsistencies. OSM Skeleton uses external data to identify the missing features and performs spatial analysis, crossed features and various metrics to analyze incompleteness and heterogeneity. For instance, the approach introduces a hybrid analytic feature that combines residential and street network areas. \nEach type of issue, whether confirmed or potential, is represented by a specific layer at national scale and can be resolved by clicking to access the relevant area in an OSM editor to modify the existing OSM data using the available imagery. The most significant issues are displayed at all scales, while minor ones are displayed at higher zoom levels.\nAll the issues can be processed by a click giving access to a webpage providing mapping instructions and buttons to open the area in either JOSM or iD. Forecasting next mapping steps involving field mapping, the OSM Skeleton approach also performs an analysis of the completeness of points of interest (POIs) for cities and towns. \nInitially developed in two regions of Africa and South America, the methodology reveals regional or national patterns, highlighting significant contrasts between regions and between small towns with the same region. Daily updated statistics categorized by issue or first-level administrative division provide a complete overview of the issues at hand. \nTechnically, the OSM Skeleton approach uses standard PostgreSQL-generated Open Geospatial Consortium (OGC) layers. These layers can be used on ready online maps provided by a spatial data infrastructure (SDI) or in any OGC-compatible client. All layers can be downloaded natively in various GIS formats. Rather than relying on remote mapping, OSM Skeleton aims to expand local OSM activities, including imagery and field mapping, as well as the local promotion of enhanced, complete OSM data.", "description": "OpenStreetMap relies on a wide variety of contributions in terms of mapped themes, covered areas, and completeness levels. This flexibility is key to its richness and success. However, it also generates a high degree of data heterogeneity and incompleteness, which is often cited by its detractors or those seeking to minimize its value.\nSome services, such as dashboard.ohsome.org and github.com/hotosm/osm-analytics, have attempted to address these concerns about heterogeneity and incompleteness, but they seem to have been discontinued.  Although there are projects aimed at validating OSM data, such as Osmose, MapRoulette and OSMCha, none of them has succeeded in resolving these issues or is truly committed to doing so.\nThis presentation introduces a new step-by-step approach that first focuses on the OSM features that comprise the backbone of homogeneous OpenStreetMap data, before broadening the perspective to include other objects: the nodes representing settlements, the main road connecting them to the main road network, as well as the residential area showing the extent of the settlement.\nThe OSM Skeleton project aims to identify all missing, inaccurate, incomplete, or obsolete objects in the OSM data backbone in order to resolve inconsistencies. OSM Skeleton uses external data to identify the missing features and performs spatial analysis, crossed features and various metrics to analyze incompleteness and heterogeneity. For instance, the approach introduces a hybrid analytic feature that combines residential and street network areas. \nEach type of issue, whether confirmed or potential, is represented by a specific layer at national scale and can be resolved by clicking to access the relevant area in an OSM editor to modify the existing OSM data using the available imagery. The most significant issues are displayed at all scales, while minor ones are displayed at higher zoom levels.\nAll the issues can be processed by a click giving access to a webpage providing mapping instructions and buttons to open the area in either JOSM or iD. Initially developed in two regions of Africa and South America, the methodology reveals regional or national patterns, highlighting significant contrasts between regions and between small towns with the same region. Daily updated statistics categorized by issue or first-level administrative division provide a complete overview of the issues at hand. \nForecasting next mapping steps involving field mapping, the OSM Skeleton approach also performs an analysis of the completeness of points of interest (POIs) for cities and towns. It provides both a category (e.g., health, education, other amenities, shops, offices) an a global score. This analysis also reveals significant differences between cities and towns, and can easily be used to organize mapping activities that focus on the least mapped cities and towns. \nTechnically, the OSM Skeleton approach does not use a dedicated backend served by a separate web service on the front-end. Instead, analyses are automatically produced in PostgreSQL and made available as WMS/WFS layers. These analyses are shared as thematic maps by country via a spatial data infrastructure (SDI) based on geOrchestra.  However, they can also natively be used in any Open Geospatial Consortium (OGC) client (such as QGIS) or downloaded in various geographic information system (GIS) formats. Providing this information on a smartphone is also planned.\nBeyond its technical aspects, the OSM Skeleton approach aims not to rely on remote mappers but to serve as an opportunity to expand local OSM activities, by involving local OSM contributors as much as possible. This involves not only the mapping activities, but also promoting locally enhanced, more homogeneous OSM data, which could leverage previous field mapping projects coordinated by Les Libres G\u00e9ographes. Identifying potential mappers for the field mapping activities is an interesting challenge that would require defining new recruitment approaches.\nThe presentation will cover the various aspects of the approach and demonstrate different analysis layers, heterogeneity contexts, and a complete workflow.\n\nNote for French participants: je peux refaire la pr\u00e9sentation en fran\u00e7ais dans une session Birds of feathers si certaines personnes sont int\u00e9ress\u00e9es.", "recording_license": "", "do_not_record": false, "persons": [{"code": "ZHZPQJ", "name": "S\u00e9verin M\u00e9nard", "avatar": null, "biography": "Since January 2010, S\u00e9verin (SeverinGeo) has been an OSM contributor, implementing programs to create and support OSM communities in the Global South. He has provided OSM and free geomatics training and mapped territories in over 20 countries since 2011, first with HOT and then through Les Libres G\u00e9ographes, a collective of which he is a founder and manager of the free SDI. Between 2021 and 2024, he was a member of the UN Mappers Crowdsourcing team, particularly overseeing educational activities and content creation for the UN Maps Learning Hub. He volunteers for WeeklyOSM and the OSMF blog.", "public_name": "S\u00e9verin M\u00e9nard", "guid": "e5c173d1-6ec1-5512-a715-0d2ce9230a00", "url": "https://pretalx.com/sotm2026/speaker/ZHZPQJ/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/8SKDAR/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/8SKDAR/", "attachments": []}, {"guid": "34b838fa-223a-5b60-9589-f302640e2327", "code": "YFBLXL", "id": 97017, "logo": null, "date": "2026-08-29T10:05:00+02:00", "start": "10:05", "end": "2026-08-29T10:25:00+02:00", "duration": "00:20", "room": "Corse", "slug": "sotm2026-97017-osm-for-cities-breaking-the-data-waste-cycle", "url": "https://pretalx.com/sotm2026/talk/YFBLXL/", "title": "OSM for Cities: Breaking the data waste cycle", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "OSM for Cities is a web platform that makes OpenStreetMap usable for anyone exploring a city's data. Search any city, browse 200+ dataset categories, and download GeoJSON filtered by administrative boundaries. No GIS expertise required.\n\nWhen a planning team worked on a bus network reevaluation in Mexico City in the late 2000s, teams GPS-tagged informal bus stops and routes, data dying in proprietary reports. At that time, OpenStreetMap was just emerging and didn't have the coverage yet. But it offered the perfect infrastructure to make this data reusable and useful for local  communities, if only teams had known about it.\n\nToday, OSM has grown, but accessing it for city-level planning remains challenging. Tools exist, but extracting city datasets filtered by administrative boundaries is still difficult for non-technical teams. OSM for Cities closes that gap, with categories spanning schools, healthcare, cycling infrastructure, and transit, backed by a self-hosted Overpass instance for global coverage.\n\nThis open-source project invites planners, researchers, local mappers and city officials to use the platform and share feedback. What would you do with easy access to your city's OSM data? We want to hear the use cases we haven't thought of yet, and the gaps we should be filling.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "UBGQQY", "name": "Vitor George", "avatar": null, "biography": "Vitor George is software engineer at Development Seed and maintainer of OSM for Cities, an open-source platform that makes OpenStreetMap data accessible for city planning. With a background in transportation planning and extensive experience building geospatial tools, he has been a contributor to OpenStreetMap and open data initiatives for many years.", "public_name": "Vitor George", "guid": "30e218ba-5c72-59ed-9653-8a004537a803", "url": "https://pretalx.com/sotm2026/speaker/UBGQQY/"}], "links": [{"title": "Online slides", "url": "https://osmforcities.github.io/talks/sotm-paris-2026", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/YFBLXL/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/YFBLXL/", "attachments": [{"title": "Slides PDF", "url": "/media/sotm2026/submissions/YFBLXL/resources/osm-for-cities-so_nT9z65p.pdf", "type": "related"}]}, {"guid": "7e3927cc-bc8e-5e0f-b5bd-d6b09fd246a9", "code": "KVZZWR", "id": 96947, "logo": null, "date": "2026-08-29T11:15:00+02:00", "start": "11:15", "end": "2026-08-29T11:35:00+02:00", "duration": "00:20", "room": "Corse", "slug": "sotm2026-96947-centipede-rtk-with-rtkbase-and-millipede-centimeter-level-gnss-positioning", "url": "https://pretalx.com/sotm2026/talk/KVZZWR/", "title": "Centipede-RTK with RTKBase and Millipede: centimeter-level GNSS positioning", "subtitle": "", "track": "Cartography", "type": "Talk", "language": "en", "abstract": "The Centipede-RTK projects aims to provide affordable centimeter-level GNSS positioning for uses heretofore limited to professional use (surveyors, famers...), due to its cost.\n\nUses: better positioning and earlier updates in OSM, for example after roadworks not yet visible on aerial photography: curb surfaces, new roods and roundabouts, new roadside equipment, etc.\n\nThere are several ways to use the network and extend it, either with DIY or commercial receivers.\n\nThe project needs ground stations to establish a reference network. It currently enjoys over 1100 base stations, mostly in France and Hungary, and is fast spreading all over the world.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "GGWS88", "name": "Pierre Beyssac", "avatar": null, "biography": "Pierre is a contributor to OSM and to the Centipede-RTK project.\n\nHe wrote the Millipede caster open-source software which serves the RTK streams of Centipede, with room for growth.\n\nHe is also involved in various past or present projects related to free software (FreeBSD) and the Internet (domain names).", "public_name": "Pierre Beyssac", "guid": "25412421-b8df-5124-b27e-a2825cb44b0b", "url": "https://pretalx.com/sotm2026/speaker/GGWS88/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/KVZZWR/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/KVZZWR/", "attachments": [{"title": "Slides", "url": "/media/sotm2026/submissions/KVZZWR/resources/20260829-milliped_kYbSWzn.pdf", "type": "related"}]}, {"guid": "548cb5e7-b33d-568c-80ae-c73af0d4fec2", "code": "SFXJZM", "id": 96901, "logo": null, "date": "2026-08-29T11:50:00+02:00", "start": "11:50", "end": "2026-08-29T12:10:00+02:00", "duration": "00:20", "room": "Corse", "slug": "sotm2026-96901-how-osm-inspire-cen-standards-for-cycling-infrastructure", "url": "https://pretalx.com/sotm2026/talk/SFXJZM/", "title": "How OSM inspire CEN standards for cycling infrastructure", "subtitle": "", "track": "Data Analysis & Data Model", "type": "Talk", "language": "en", "abstract": "As a follow-up of the European Cycling Declaration, DG MOVE requested the European standardisation body CEN to pave the way for the standardisation of the digital description of cycling infrastructure.\nTaking a new approach to CEN standardisation, the experts group behind the Cyclinfra project decided to build from the existing. Their first playground: OpenStreetMap and its data on cycling infrastructure and cycle parking. They explored and extracted the data from OSM to conduct research on European baseline for cycling infrastructure. \nConsidering that a large amount of European cities use OpenStreetMap and open-source tools weaved into it for their GIS data, it would only be logic that the future CEN standards are strongly interoperable with OSM and its most frequently used tags for cycling.\nIn this session, we will present the Cyclinfra project, its methodology, how OSM will be used to build CEN standards, and how you can contribute!", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "RNDKVU", "name": "Tu-Tho Thai", "avatar": "https://pretalx.com/media/avatars/TSFLDS_0bEgBBs.webp", "biography": "Tu-Tho is the lead of the French standardisation group for passenger information and management of mobility services and the co-lead of NeTEx subgroup within CEN. She is also a passionate advocate for IT solutions and standards that are grounded in their responses to the needs of the ecosystem.  \nLeveraging her multimodal mobility data expertise and her past life as an expatriate in Southeast Asia, she actively contributes to building bridges, finding consensus, and creating convergence between different sectors of the mobility industry.\nShe strongly believes that the future must be written globally with all learning from each other.", "public_name": "Tu-Tho Thai", "guid": "ba8246e4-07c1-5fb8-b1e0-aa2b45b565fe", "url": "https://pretalx.com/sotm2026/speaker/RNDKVU/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/SFXJZM/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/SFXJZM/", "attachments": [{"title": "Cyclinfra slides for SOTM26", "url": "/media/sotm2026/submissions/SFXJZM/resources/2026-08-29_SOTM_-_2RlKnFt.pdf", "type": "related"}]}, {"guid": "819e490d-e57c-50ef-88a0-dcf09e320b38", "code": "WGMV3T", "id": 97030, "logo": null, "date": "2026-08-29T12:25:00+02:00", "start": "12:25", "end": "2026-08-29T12:45:00+02:00", "duration": "00:20", "room": "Corse", "slug": "sotm2026-97030-making-a-living-on-osm-by-nurturing-the-commons-inside-the-french-federation-of-osm-professionals", "url": "https://pretalx.com/sotm2026/talk/WGMV3T/", "title": "Making a living on OSM by nurturing the commons\u00a0: inside the French Federation of OSM professionals", "subtitle": "", "track": "Community and Foundation", "type": "Talk", "language": "en", "abstract": "The F\u00e9d\u00e9ration des pros d\u2019OpenStreetMap (FPOSM) is the French non\u2011profit organization that unites companies and professionals whose services and tools are built on OpenStreetMap, and who are committed to keeping OpenStreetMap a healthy digital commons. \n\nLaunched during State-of-the-Map France 2023, the FPOSM now gathers 28 French companies with expertise in creating, using, enhancing and ensuring the quality of OSM data on topics such as\u00a0: mobility, routing and accessibility, infrastructures and power grids, urban planning, food and agriculture, tourism, local business, community outreach and more. Members also develop and maintain software around OpenStreetMap, such as Clearance, Podoma, LeBonTag, GridInspector.\n\nThe FPOSM is the worldwide most advanced structured federation of OSM professionals directly coming from and complementary to the volunteer community and local chapters. \n\nWe will share how and why FPOSM was created, and how we are committed to preserve OpenStreetMap\u2019s ethos and guidelines.\n\nWe will also talk about the FPOSM\u2019s collective work:\n\n- OSM advocacy towards public authorities\n- The practical booklet \u00ab\u00a0Everything you need to know about the ODbL licence, available in French and English.\n- The guide \u00ab\u00a0OpenStreetMap and Territories\u00a0\u00bb, which brings together a wide range of testimonials from French public sector stakeholders who have used OSM across their territories.\n- The organization of events like \u00ab\u00a0OpenStreetMap & territoires\u00a0\u00bb that connect professionals and public actors.\n\nWe\u2019ll wrap up with what we\u2019ve learned, what challenges we are facing, and some ideas for starting similar groups elsewhere, so professional ecosystems grow alongside and actively support local OSM communities.", "description": "_**What we will talk about\u00a0?**_\n\n- The French context, why we created the FPOSM and how it sits alongside OpenStreetMap France\u2019s local chapter and the wider volunteer community.\n- Our code of Ethics and how we decide who can join, in regards to the respect of the ODbL and the broader OSM community guidelines.\n- How we talk about OSM with public bodies and clients without hiding the commons behind proprietary language. \n- What our members do in terms of projects and tools, and what they bring to local communities.\n\n**_Who is this for\u00a0?_**\n\n- Anyone interested in new ways of organising the professional side of the OSM ecosystem.\n- Local chapters, grassroots groups, co\u2011ops, freelancers and companies who are interested in how to organise OSM professionals in a way that stays friendly to the community.\n- Public sector staff who work or would like to work with OSM and / or OSM consultants, and who want to understand what to ask for and what OSM can provide.\n\n**_What we hope you will take away\u00a0?_**\n\nWe hope that people who join us during this session will leave with:\n\n- An understanding how a federation of OSM professionals works in practice.\n- Ideas for what to include in an code of Ethics and what to look for in new applicants. \n- Resources and event formats that you can try to strengthen the outreach to the private and public sectors.\n- Where to start if you want to start a similar federation in your own country.", "recording_license": "", "do_not_record": false, "persons": [{"code": "FXXZDV", "name": "Marina Petkova", "avatar": "https://pretalx.com/media/avatars/CAUAZY_pBDYKmu.webp", "biography": "Hello, I'm Marina ! \n\nI contribute to OpenStreetMap both as a volunteer and professionally. \n\nI am based in France, where i co-founded the company [Dynartio](https://dynartio.com/). \nWe focus on tooling and data analysis for circular economy and territorial resource flows. \nWe use OpenStreetMap, both as contributors and as practitioners.\n\nI am member of the [FPOSM](https://fposm.fr/), and the [MapYourGrid](https://mapyourgrid.org/) initiative.\n\nYou can find me [here](https://www.openstreetmap.org/user/map-dynartio), [here](https://wiki.openstreetmap.org/wiki/User:Map-dynartio), or [here](https://www.linkedin.com/in/marinapetkova/).", "public_name": "Marina Petkova", "guid": "da6880f2-afb4-5dda-b875-9c37e957bea3", "url": "https://pretalx.com/sotm2026/speaker/FXXZDV/"}, {"code": "WAM9JE", "name": "Florian Lainez", "avatar": null, "biography": null, "public_name": "Florian Lainez", "guid": "7cc626d2-bdc0-5987-9266-dbd823162254", "url": "https://pretalx.com/sotm2026/speaker/WAM9JE/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/WGMV3T/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/WGMV3T/", "attachments": []}, {"guid": "7485a6a8-23ff-5259-bc68-1350d3079f52", "code": "LDQTKQ", "id": 98503, "logo": null, "date": "2026-08-29T14:30:00+02:00", "start": "14:30", "end": "2026-08-29T14:50:00+02:00", "duration": "00:20", "room": "Corse", "slug": "sotm2026-98503-lightning-talks-ii", "url": "https://pretalx.com/sotm2026/talk/LDQTKQ/", "title": "Lightning Talks II", "subtitle": "", "track": "Lightning Talks", "type": "Talk", "language": "en", "abstract": "* More open, more connected - OSM across ArcGIS & OSM editors\n* weeklyOSM - What's new?\n* OSM.kids\n* Mapping Historical Photos without yesterdays\n* TerrainK: create art using OSM data", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "SNKPLF", "name": "SotM Working Group", "avatar": null, "biography": null, "public_name": "SotM Working Group", "guid": "f6fa5674-5726-564b-8067-4c97aa612977", "url": "https://pretalx.com/sotm2026/speaker/SNKPLF/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/LDQTKQ/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/LDQTKQ/", "attachments": []}, {"guid": "412c1198-aae8-54de-a797-3b57993db2b6", "code": "L9CZPJ", "id": 97026, "logo": null, "date": "2026-08-29T15:05:00+02:00", "start": "15:05", "end": "2026-08-29T15:25:00+02:00", "duration": "00:20", "room": "Corse", "slug": "sotm2026-97026-putting-childcare-on-the-map-supporting-parents-in-nairobi-through-openstreetmap", "url": "https://pretalx.com/sotm2026/talk/L9CZPJ/", "title": "Putting Childcare on the Map: Supporting Parents in Nairobi Through OpenStreetMap", "subtitle": "", "track": "Community and Foundation", "type": "Talk", "language": "en", "abstract": "Access to affordable, nearby daycare is a pressing concern for many parents, particularly young mothers who seek to continue their education or participate in the workforce. Yet, in many parts of Africa, spatial data on childcare facilities remains sparse, outdated, or completely unavailable.\nThis talk will present a community mapping initiative that aims to address this data gap by identifying and mapping daycare facilities in a Nairobi neighbourhood using OpenStreetMap tools. Through a participatory process involving local youth and community groups, the project collects geolocated data on operational daycare centres, including their names, services, capacity, contact information, and safety features.\nTo achieve this, the project utilises QGIS for planning, digitisation, and visualisation of the data layers, while QField is used for efficient, mobile-based field data collection. With the JOSM plugin in QGIS, the cleaned and verified datasets are uploaded directly to the OSM platform, ensuring that the information becomes globally accessible and contributes to the growing body of open data supporting African communities.\nThe use of these open-source tools enables community members, including those with limited technical backgrounds, to engage in the full mapping workflow. The project ultimately empowers local mappers, supports better decision-making for parents, and enables local leaders and planners to identify service gaps and allocate resources more effectively.\nIn alignment with the conference theme, this initiative showcases how grassroots open mapping can connect communities to essential services, promote gender equality, and foster sustainable collaboration among residents, developers, government officials, and open data advocates.\n\nKeywords: childcare, OpenStreetMap, participatory mapping, QGIS, QField, open data, Nairobi, YouthMappers.\n\nKey Learning Outcomes:\n\u2022 How to use QGIS and QField to implement a local community mapping project\n\u2022 Publishing collected data to OpenStreetMap using the JOSM plugin\n\u2022 Engaging local stakeholders, especially women and youth, in a participatory mapping approach\n\u2022 Practical lessons from mapping social infrastructure that serves vulnerable populations", "description": "This project aimed to identify and map childcare facilities around Juja and  Makongeni in Kiambu, Kenya, to help students and working parents access reliable childcare services. The initiative is part of the YouthMappers Kenya network\u2019s effort to promote open geospatial data for social impact and gender equity in education and urban communities", "recording_license": "", "do_not_record": false, "persons": [{"code": "9BV78P", "name": "Maurine Oyugi", "avatar": "https://pretalx.com/media/avatars/LCZWYR_fpsXAbk.webp", "biography": "Maurine Oyugi is a Geomatics Engineer and GIS Consultant based in Nairobi, Kenya. She currently consults with Bricon Consulting and serves as a Volunteer Regional Ambassador for YouthMappers. With experience in geospatial data collection, mapping, and community engagement, Maurine has led and supported projects across Africa, collaborating with organisations such as the Red Cross and the Clinton Health Access Initiative. She specialises in using open-source tools to solve local challenges. As a young mother and advocate for inclusive mapping, she is passionate about using spatial data to empower women, support childcare access, and drive evidence-based decision-making.", "public_name": "Maurine Oyugi", "guid": "73d4087b-a408-5a0b-9bc4-33876deccffb", "url": "https://pretalx.com/sotm2026/speaker/9BV78P/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/L9CZPJ/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/L9CZPJ/", "attachments": []}, {"guid": "9d9e0308-083b-5c3b-8a36-1faec567b580", "code": "VUYNMB", "id": 96008, "logo": null, "date": "2026-08-29T15:40:00+02:00", "start": "15:40", "end": "2026-08-29T16:00:00+02:00", "duration": "00:20", "room": "Corse", "slug": "sotm2026-96008-when-maps-mislead-lessons-from-outdoor-navigation-with-openstreetmap", "url": "https://pretalx.com/sotm2026/talk/VUYNMB/", "title": "When Maps Mislead: Lessons from Outdoor Navigation with OpenStreetMap", "subtitle": "", "track": "Cartography", "type": "Talk", "language": "en", "abstract": "Mapy.com is a widely used mapping application with a strong focus on hiking and cycling, used daily by millions of people.\n\nIt is built largely on OpenStreetMap \u2014 but using OSM in a real product at this scale quickly shows that the data is not always complete, consistent, or ready to use as-is.\n\nIn this talk, I will share what we have learned while running Mapy.com in production. Not an introduction to the product, but practical experience: what works well, what causes problems, and what we had to change or interpret to make the data usable for everyday outdoor navigation.\n\nA key part is understanding what a good outdoor map actually needs. For us, that means things like a complete network of marked hiking and cycling routes, usable terrain information, and details that help people orient themselves in real conditions. When parts of this are missing or inconsistent, the result can be routes that look fine on the map but don\u2019t work well in reality. In practice, the biggest challenge is often not incorrect data, but missing connections and incomplete route networks, combined with strong regional differences in data quality.\n\nWe see this in practice \u2014 situations where navigation leads people into terrain they are not prepared for are not rare, and they show how important data quality really is.\n\nWe will also look at attributes like surface and difficulty, access restrictions, and seasonal limitations, which are often critical for deciding whether a route is actually suitable. I will also touch on overtourism and how maps can better reflect real-world constraints instead of just showing everything that exists.\n\nFinally, I will share how this experience feeds back into OpenStreetMap \u2014 what we contribute, where we still see gaps, and where better cooperation between companies and the community could help.\n\nThis talk is for anyone interested in how OpenStreetMap is actually used in practice, especially beyond the \u201cit works on the map\u201d level.", "description": "This talk builds on practical experience from running a large-scale outdoor mapping application based on OpenStreetMap.\n\nIn addition to the topics mentioned in the abstract, the presentation will include concrete examples of how OSM data is processed and adapted for real-world use. This includes handling incomplete route networks, dealing with inconsistent tagging across regions, and making cartographic decisions where the data is ambiguous or missing.\n\nA specific focus will be on outdoor use cases such as hiking and cycling, where data quality has a direct impact on user safety and decision-making. Examples will include routing across fragmented trail networks, interpreting terrain and surface information, and dealing with missing or unreliable difficulty classifications.\n\nThe talk will also highlight how different regions vary significantly in data completeness and quality, and how this affects both rendering and routing. This leads to practical questions such as when to trust the data, when to apply heuristics, and when to fall back to alternative approaches.\n\nAnother important aspect is how map data reflects real-world constraints, including access restrictions, seasonal closures, and protected areas. These factors are increasingly relevant in the context of overtourism and responsible outdoor navigation.\n\nFinally, the presentation will include examples of how these challenges are communicated back to the OpenStreetMap community, including contributions, feedback loops, and areas where better data models or tagging practices could improve usability.\n\nThe goal of the talk is to provide a realistic view of using OpenStreetMap in production, especially in demanding outdoor scenarios, and to encourage discussion about how the ecosystem can evolve to better support these use cases.", "recording_license": "", "do_not_record": false, "persons": [{"code": "BRSJJK", "name": "Jakub Zmrzlik", "avatar": "https://pretalx.com/media/avatars/LFHKY8_BAgLnKE.webp", "biography": "Jakub Zmrzlik is a product manager at Mapy.com (Seznam.cz), a widely used map platform serving millions of users across web and mobile. He has over 15 years of experience in digital mapping and cartography, focusing on building and operating large-scale map products.\n\nHis work is centered on outdoor navigation, particularly hiking and cycling, where data quality and real-world usability are critical. He works across product, data, and cartography, with a strong focus on turning OpenStreetMap data into reliable services used in everyday situations.", "public_name": "Jakub Zmrzlik", "guid": "83474efc-4aa4-5b0f-b6e5-b3638ffb16a6", "url": "https://pretalx.com/sotm2026/speaker/BRSJJK/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/VUYNMB/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/VUYNMB/", "attachments": []}, {"guid": "f5b1d4e4-b1ef-5871-99b1-17eed96df113", "code": "DTQXXN", "id": 96738, "logo": null, "date": "2026-08-29T16:45:00+02:00", "start": "16:45", "end": "2026-08-29T17:05:00+02:00", "duration": "00:20", "room": "Corse", "slug": "sotm2026-96738-how-openstreetmap-became-the-backbone-of-france-s-national-cycling-database", "url": "https://pretalx.com/sotm2026/talk/DTQXXN/", "title": "How OpenStreetMap became the backbone of France's National Cycling Database", "subtitle": "", "track": "User Experiences", "type": "Talk", "language": "en", "abstract": "In the wake of the French \"Loi d'Orientation des Mobilit\u00e9s\" (LOM), local authorities faced a major challenge: how to produce and share standardized, high-quality data on cycling infrastructure? \nThis presentation explores the success story of the Base Nationale des Am\u00e9nagements Cyclables (BNAC), a national standard born from the collaboration between Geovelo, Carto\u2019Cit\u00e9, the French government and local authority, and the OpenStreetMap community.\nFor over two decades, Carto\u2019Cit\u00e9 and Geovelo have been using OpenStreetMap as their core engine. When the need for a national database emerged, instead of creating a closed silo, the partners chose to leverage OSM's flexibility. We will detail our methodology, aiming to replicate such a success :\n\n- Data Enrichment: How we transform raw OSM tags into a schema compliant with national requirements.\n- The Feedback Loop: How we help local authorities to contribute back to OSM, ensuring a \"single source of truth\" that benefits everyone \u2013 from GPS users to urban planners.\n- Success Metrics: A look at the results with over 110,000 km of cycling paths harmonized and available for everybody.\n\nThis session will demonstrate how private players, rooted in the community and the OSM environment, can act as technical catalysts to turn OSM data into a government  standard, providing a replicable model for other countries aiming for Cycling Data Sovereignty.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "CKDKMV", "name": "Samuel Deschamps-Berger", "avatar": "https://pretalx.com/media/avatars/QFGPTR_cR3ewTr.webp", "biography": "OSM contributor since 2012 and GIS engineer.\nAfter gaining experience in the IT services sector and working at Forcity (SimCity in real life), I joined Geovelo to help with the integration of mapping and route calculators 6 years ago.\nI am now Head of the Geodata team, where we centralize and analyze all issues related to bicycle mobility and the geographic data value chain.", "public_name": "Samuel Deschamps-Berger", "guid": "ec7acafb-8637-5254-b1be-894f066c6686", "url": "https://pretalx.com/sotm2026/speaker/CKDKMV/"}], "links": [{"title": "Base Nationale des Am\u00e9nagements Cyclables", "url": "https://www.data.gouv.fr/datasets/amenagements-cyclables-france-metropolitaine", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/DTQXXN/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/DTQXXN/", "attachments": []}, {"guid": "b6727911-070a-5d60-b6b8-1c5d1e57014f", "code": "DWSETV", "id": 103424, "logo": null, "date": "2026-08-29T17:20:00+02:00", "start": "17:20", "end": "2026-08-29T17:40:00+02:00", "duration": "00:20", "room": "Corse", "slug": "sotm2026-103424-lightning-talks-iii", "url": "https://pretalx.com/sotm2026/talk/DWSETV/", "title": "Lightning Talks III", "subtitle": "", "track": "Lightning Talks", "type": "Talk", "language": "en", "abstract": "* Geoparquet for OSM\n* Mapping cycleways according to ECF\n* Enriching OSM using POI's websites\n* Mapping datacenters as a community with OSM\n* passstrasse.com - 100% AI map app", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "SNKPLF", "name": "SotM Working Group", "avatar": null, "biography": null, "public_name": "SotM Working Group", "guid": "f6fa5674-5726-564b-8067-4c97aa612977", "url": "https://pretalx.com/sotm2026/speaker/SNKPLF/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/DWSETV/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/DWSETV/", "attachments": []}, {"guid": "a612256e-eafc-591d-a812-8a1c068435ef", "code": "9C7LJM", "id": 96510, "logo": null, "date": "2026-08-29T17:55:00+02:00", "start": "17:55", "end": "2026-08-29T18:15:00+02:00", "duration": "00:20", "room": "Corse", "slug": "sotm2026-96510-a-new-stack-for-openstreetmap-vector-tiles", "url": "https://pretalx.com/sotm2026/talk/9C7LJM/", "title": "A new stack for OpenStreetMap vector tiles", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "This talk presents an open-source stack for building, rendering, and using OpenStreetMap vector tiles. [Ascend Maps](https://github.com/styluslabs/maps) is a cross-platform application for interactive maps. It is highly customizable, with hiking, cycling, and transit views for the base map, user-editable sources, styles, and shaders for custom maps, and plugins for search, routing, and map sources.\n\n[tangram-ng](https://github.com/styluslabs/tangram-ng) extends the Tangram ES map engine originally created by Mapzen, adding support for 3D terrain, embedded SVG, and additional raster formats, along with substantial performance and stability improvements.\n\n[geodesk-tiles](https://github.com/styluslabs/geodesk-tiles) builds vector tiles on demand from a GeoDesk library, making it possible to start serving tiles for the whole world instantly.  geodesk-tiles also provides geocoding for worldwide place and POI search.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "WG9XRK", "name": "Matt White", "avatar": null, "biography": "I develop a number of open-source applications at [github.com/styluslabs](https://github.com/styluslabs).  I use testing maps as a great excuse for hiking, cycling, and ski touring.  Originally from the United States, I am currently a researcher at the European Center for Quantum Sciences in Strasbourg, working on neutral atom quantum computing.", "public_name": "Matt White", "guid": "8a1148c4-a2ea-52e3-adbc-bfc820c150c8", "url": "https://pretalx.com/sotm2026/speaker/WG9XRK/"}], "links": [{"title": "Ascend Maps Github", "url": "https://github.com/styluslabs/maps", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/9C7LJM/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/9C7LJM/", "attachments": []}], "Tahiti": [{"guid": "ca8fbe72-750b-57f3-83ea-4f0be5947c12", "code": "JUPZXH", "id": 97041, "logo": null, "date": "2026-08-29T09:30:00+02:00", "start": "09:30", "end": "2026-08-29T10:30:00+02:00", "duration": "01:00", "room": "Tahiti", "slug": "sotm2026-97041-awesome-josm-tips-that-beat-every-desktop-gis-and-ai", "url": "https://pretalx.com/sotm2026/talk/JUPZXH/", "title": "Awesome JOSM: tips that beat every Desktop GIS and AI", "subtitle": "", "track": "Mapping", "type": "Workshop", "language": "en", "abstract": "Did you know JOSM can do many things better than your favorite Desktop GIS application? Imagine replacing your Desktop GIS with JOSM that's it :). Some JOSM Aha! moments.\n\nIn this workshop we will explore many JOSM tips that improve mapping both within OpenStreetMap and beyond. Come with a JOSM tip and use case if you can but this is not required as there will be more than enough to share and learn from everyone.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "DC3PFW", "name": "Enock Seth Nyamador", "avatar": null, "biography": "I am a volunteer OpenStreetmap contributor and Free/Libre and Open Source Software enthusiast. I contribute to OpenStreetMap mostly in Ghana where I try to add new features and also fix many useless contributions from years and recent by both individual or organized remote mappers. I support [Good changeset comments](https://wiki.openstreetmap.org/wiki/Good_changeset_comments).", "public_name": "Enock Seth Nyamador", "guid": "45f196d7-4a2d-5455-972d-6901ab6220a5", "url": "https://pretalx.com/sotm2026/speaker/DC3PFW/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/JUPZXH/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/JUPZXH/", "attachments": []}, {"guid": "43bddaca-5aa0-5507-b849-4624ca68218b", "code": "XLETVQ", "id": 97029, "logo": null, "date": "2026-08-29T11:15:00+02:00", "start": "11:15", "end": "2026-08-29T12:15:00+02:00", "duration": "01:00", "room": "Tahiti", "slug": "sotm2026-97029-from-bits-to-pixels-introduction-to-map-making-with-osm-data-and-maplibre", "url": "https://pretalx.com/sotm2026/talk/XLETVQ/", "title": "From Bits to Pixels: Introduction to Map Making with OSM Data and MapLibre", "subtitle": "", "track": "Cartography", "type": "Workshop", "language": "en", "abstract": "Publishing a map on a website can seem like a daunting task. It does not have to be! In this workshop you will learn everything you need to know to publish a map that uses OpenStreetMap on a website.\n\nYou will get an overview of all the concepts involved as well as the tools that are available to you (e.g. vector tiles, tile archive formats such as PMTiles, MapLibre styles, Maputnik). As a bonus, you will learn how you can create your own vector tiles from raw OSM data using Planetiler.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "7UQBTA", "name": "Bart Louwers", "avatar": "https://pretalx.com/media/avatars/8ZHUKC_mxaswBq.webp", "biography": "Bart is the maintainer of MapLibre Native, an open source community driven map rendering toolkit used by many such as OSM editors, ride sharing apps, hiking navigation apps and many more.\n\nHe is passionate about open source and a free internet that works for everyone. In his free time he likes to kayak, play board games and map.", "public_name": "Bart Louwers", "guid": "778bc155-67fe-5ace-b5d5-740de5c8e9b0", "url": "https://pretalx.com/sotm2026/speaker/7UQBTA/"}, {"code": "8J9LYV", "name": "Yuri Astrakhan", "avatar": "https://pretalx.com/media/avatars/8MCDF9_NJzd39k.webp", "biography": "I am a long time open source advocate and contributor in maps and Rust, founder and a board member of MapLibre. Apart from numerous open source projects, I work at Rivian Volkswagen Tech as  a principle engineer leading maps and Rust adaption efforts.  Author of Sophox (OSM graph db), Wikipedia maps, API, and graphs.", "public_name": "Yuri Astrakhan", "guid": "6460094d-9a9c-56fa-b2ba-dc1eed0e8dfb", "url": "https://pretalx.com/sotm2026/speaker/8J9LYV/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/XLETVQ/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/XLETVQ/", "attachments": []}, {"guid": "51775374-c841-55e9-a5c9-25f5841b21c1", "code": "EKTQAD", "id": 96997, "logo": null, "date": "2026-08-29T14:30:00+02:00", "start": "14:30", "end": "2026-08-29T15:30:00+02:00", "duration": "01:00", "room": "Tahiti", "slug": "sotm2026-96997-introduction-to-osm-analytics-with-ohsome", "url": "https://pretalx.com/sotm2026/talk/EKTQAD/", "title": "Introduction to OSM Analytics with ohsome", "subtitle": "", "track": "Data Analysis & Data Model", "type": "Workshop", "language": "en", "abstract": "This beginner-friendly workshop introduces the ohsome-dashboard as an accessible entry point to OpenStreetMap analytics \u2014 no coding skills required. Participants will learn how to explore OSM data through hands-on exercises, developing their own ohsome-filters with the help of the OSM-Wiki and TagInfo. These ohsome-filters are then applied to user-selected regions to investigate aspects such as attribute completeness, data currentness, and mapping activity. The workshop concludes with an outlook towards more advanced analyses, including changeset-based exploration and user statistics.  \n\nAdditionally, an overview on the topic is planned as a talk.", "description": "This 60-minute workshop provides a hands-on introduction to OSM-Analytics using the ohsome-dashboard. It is specifically designed for beginners and does not require any programming or prior experience. \n\nThe session starts with a guided overview of the ohsome-dashboard interface and its core functionalities. Participants will learn how to define spatial and thematic queries, interact with visualizations, and interpret basic analytical results. The focus is on enabling participants to confidently explore OSM data without needing to write code. \n\nA central part of the workshop consists of exercises, where participants will work step by step to develop their own ohsome-filters, combining tags and conditions to define specific features of interest. To support this process, we will actively use the OSM-Wiki and Taginfo as reference tools to better understand tagging schemes and common tag combinations. This helps participants not only to build ohsome-filters, but also gain a deeper understanding of how OSM data is modelled in theory and de-facto. \n\nOnce ohsome-filters are created, participants will apply them to regions of their choice. This allows them to explore real-world questions such as: \n\n- How complete is a certain attribute in a given area? \n- How up-to-date is the data? \n- How has mapping activity evolved over time? \n\nIn the final part of the workshop, we will briefly introduce more advanced analytical possibilities, including working with changesets and exploring user-based statistics to better understand contribution patterns and community dynamics.  \n\nBy the end of the workshop, participants will have a solid understanding of how to use the ohsome-dashboard for exploratory OSM analyses. They will be able to formulate their own questions, build suitable ohsome-filters, and interpret the results.", "recording_license": "", "do_not_record": false, "persons": [{"code": "EFSNKZ", "name": "Rafael Troilo", "avatar": null, "biography": "Software developer and data engineer at HeiGIT (heigit.org) since 2016, focused on geospatial analytics and OpenStreetMap data. Contributor to OSHDB, ohsome API, and ohsome-planet tools. Specialized in backend systems using Java and Python. Enthusiastic about scalable data processing, open data, and enabling data-driven insights for global mapping communities.", "public_name": "Rafael Troilo", "guid": "b681681f-42a2-5bd7-a4af-0a9ce744479b", "url": "https://pretalx.com/sotm2026/speaker/EFSNKZ/"}, {"code": "7GG3YY", "name": "Michael Auer", "avatar": null, "biography": "OSM contributor since 2008.\nDeveloping backend and frontend tools to visualize and analyze OSM since the early days. \nCo-creator of former and current  OSM Services like osm-wms.de, HistOSM.org, osmlanduse.org, hex.ohsome.org, dashboard.ohsome.org, and stats.now.ohsome.org.\nResearch and Teaching of GIScience at University of Bonn (2008-2010) and Heidelberg University (2010-today).\n2019 PhD in Geography on \"Advancing 3D WebGIS \u2013\nbrowser-based Methods for Visualization and Analysis and their Integration in Virtual Research Environments in the Context of Cultural Heritage\"", "public_name": "Michael Auer", "guid": "50a44de4-2b48-557f-8b25-b89779d88762", "url": "https://pretalx.com/sotm2026/speaker/7GG3YY/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/EKTQAD/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/EKTQAD/", "attachments": [{"title": "Workshop Slides", "url": "/media/sotm2026/submissions/EKTQAD/resources/2026_SotM_Paris_I_ZhOLcNH.pdf", "type": "related"}]}, {"guid": "25f2018d-d428-5124-8e24-ba4e9668ed91", "code": "TUDVSJ", "id": 97046, "logo": null, "date": "2026-08-29T16:45:00+02:00", "start": "16:45", "end": "2026-08-29T17:45:00+02:00", "duration": "01:00", "room": "Tahiti", "slug": "sotm2026-97046-let-s-create-links-between-osm-and-wikipedia", "url": "https://pretalx.com/sotm2026/talk/TUDVSJ/", "title": "Let's create links between OSM and Wikipedia!", "subtitle": "", "track": "OSM Basics", "type": "Workshop", "language": "en", "abstract": "Many people turn to Wikipedia when looking for information about the OpenStreetMap ecosystem.\nSince Paris hosted Wikimania\u2014Wikipedia\u2019s SOTM\u2014in July, this workshop will teach you how to contribute to Wikipedia\u2019s pages on OpenStreetMap and maps. Let\u2019s bring our two communities closer together\u2014they have so much in common and so much to learn from one another!", "description": "This workshop aims to help fill in the gaps in the OpenStreetMap ecosystem\u2019s Wikipedia pages across as many of the encyclopedia\u2019s languages as possible (French, English). Participants will work in pairs\u2014one beginner and one experienced user\u2014or in small thematic groups to help complete the encyclopedia\u2019s entries. In French and/or English.", "recording_license": "", "do_not_record": false, "persons": [{"code": "Q8DE3A", "name": "Delphine Montagne", "avatar": null, "biography": "A cartographer and geomatics specialist by training, I have been contributing to OpenStreetMap projects for 10 years. I incorporated OSM into my professional work before expanding my involvement to other projects such as Wikipedia. I am now a trainer and raise awareness of Wikimedia projects as a Wikimedia resident at URFIST in Paris.", "public_name": "Delphine Montagne", "guid": "838e7467-c06c-50c8-a780-7cf20cf02b48", "url": "https://pretalx.com/sotm2026/speaker/Q8DE3A/"}], "links": [{"title": "Presentation", "url": "https://filesender.renater.fr/?s=download&token=90374f92-6451-43bd-8d7c-b00714410e09", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/TUDVSJ/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/TUDVSJ/", "attachments": []}], "Porquerolles": [{"guid": "7f413e5f-f126-50a9-b09f-6cceefd13378", "code": "KVRPHX", "id": 105197, "logo": null, "date": "2026-08-29T09:30:00+02:00", "start": "09:30", "end": "2026-08-29T10:00:00+02:00", "duration": "00:30", "room": "Porquerolles", "slug": "sotm2026-105197-id-what-s-new-where-are-we-heading", "url": "https://pretalx.com/sotm2026/talk/KVRPHX/", "title": "iD - what's new & where are we heading?", "subtitle": "", "track": "Birds of a Feather/BOF Session", "type": "Birds of a Feather/BOF Session", "language": "en", "abstract": "Bring your own feedback!", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "AM8TGJ", "name": "Martin Raifer", "avatar": null, "biography": "I do currently maintain the iD editor for the OpenStreetMap Foundation. I do also have a part time position at HeiGIT (Heidelberg Institute for Geoinformation Technology), where I contribute to software for academic research about OSM data. 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This talk explains how the project was set up, how data collection and processing were organized, and how the resulting imagery strengthens public digital autonomy. Similar to developments in France\u2014where IGN has taken a leading role in producing sovereign geospatial data\u2014Panorama aims to reduce dependency on commercial suppliers and ensure long\u2011term control over essential imagery.", "description": "In 2025\u20132026, a group of Dutch governmental organizations began developing a Dutch Panoramax instance, an initiative to produce openly accessible street\u2011level imagery for public use. The project aims to create a sustainable, privacy\u2011aware dataset that supports a wide range of governmental and societal tasks while increasing autonomy over critical geospatial infrastructure.\n\nThis session provides an overview of the project\u2019s first 12 months: how the collaboration was formed, how imagery collection was organized. A key theme is digital sovereignty. Several European countries are moving in this direction\u2014for example, France\u2019s national mapping agency IGN has invested heavily in producing sovereign, open geospatial datasets. The Netherlands follows a similar philosophy by reducing reliance on commercial imagery providers and ensuring long\u2011term control over data availability, licensing, and continuity.\n\nThe talk also discusses the challenges encountered\u2014technical, organizational, legal, and privacy\u2011related\u2014and the approaches taken to address them. It concludes with next steps and open questions, offering insights for other regions exploring open, self\u2011governed imagery initiatives.", "recording_license": "", "do_not_record": false, "persons": [{"code": "E7PKLS", "name": "Bas Bussink", "avatar": null, "biography": "Bas Bussink is a Product Owner for the Nationaal Wegenbestand (NWB), the official digital road network of the Netherlands. 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This talk involves our architecture with duckdb , postgresql , API's and standalone python processor built on top of osmium ! This tool doesn't do anything else rather than providing the OSM mapping statistics in user level ! Similar to how leaderboard used to work  ! It would be our official public launch of the tool to wider OSM community !", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "VB3ZLG", "name": "Kshitij Raj Sharma", "avatar": null, "biography": "Kshitij Raj Sharma is a geospatial developer from Nepal, passionate about open-source software and open data. with FOSS advocacy experience, he is a founding member of OSGEO Nepal and active in OSM Nepal. 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She is actively involved in community mapping initiatives and mentors new contributors in South Asia.", "public_name": "Niruta Neupane", "guid": "17577a20-38d7-58b5-a24a-d2c1b3ec7eba", "url": "https://pretalx.com/sotm2026/speaker/HUZJEX/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/HJLK8U/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/HJLK8U/", "attachments": []}, {"guid": "39aa11a7-2715-5a55-931f-6433f48d1d18", "code": "LPJ9S7", "id": 96868, "logo": null, "date": "2026-08-30T14:30:00+02:00", "start": "14:30", "end": "2026-08-30T15:30:00+02:00", "duration": "01:00", "room": "Guadeloupe", "slug": "sotm2026-96868-osmf-board-ama", "url": "https://pretalx.com/sotm2026/talk/LPJ9S7/", "title": "OSMF Board AMA", "subtitle": "", "track": "Community and Foundation", "type": "Panel", "language": "en", "abstract": "Join the OSMF Board for our Ask Us Anything session. The session will start with a short update presentation from the Board, and then we will switch to an open discussion with the community. Questions can come from the room or from community submissions gathered ahead of the event, on recent work, current priorities, and future plans.\nIf you're not sure what the Board actually does, this is the session to come to. Find out what the Foundation does and doesn't do, what it can and can't do, and how you can get involved. The Board is committed to openness and to engaging with the community: not just here, but year-round. Ask us here, ask us in the hallway, ask us online.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "JYPRZC", "name": "Laura Mugeha", "avatar": "https://pretalx.com/media/avatars/KEEP87_a80gesX.webp", "biography": "Laura is a Geospatial engineer working at the intersection of open data, free and open-source software, and sustainable development. 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With a Computer Engineering background, he pursued a master\u2019s in Cartography and is now completing a PhD at the University of Camerino, Italy.\nPassionate about transportation and urban mobility, H\u00e9ctor enjoys travelling and exploring new cultures. In 2024, he joined the [OpenStreetMap Foundation board](https://osmfoundation.org/wiki/Officers_%26_Board).", "public_name": "H\u00e9ctor Ochoa Ortiz", "guid": "2cf51f85-07e6-5e8f-96b5-d815b1d022e8", "url": "https://pretalx.com/sotm2026/speaker/KMWNXP/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/LPJ9S7/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/LPJ9S7/", "attachments": []}, {"guid": "d190f611-972a-573e-87fb-36e66a3dd4ed", "code": "VUTQVY", "id": 97015, "logo": null, "date": "2026-08-30T15:40:00+02:00", "start": "15:40", "end": "2026-08-30T16:00:00+02:00", "duration": "00:20", "room": "Guadeloupe", "slug": "sotm2026-97015-wonders-of-osm", "url": "https://pretalx.com/sotm2026/talk/VUTQVY/", "title": "Wonders of OSM", "subtitle": "", "track": "User Experiences", "type": "Talk", "language": "en", "abstract": "A quick tour of interesting places and anecdotes to explore on OpenStreetMap around the world\ud83c\udf0d: because it\u2019s beautiful, surprising, and delightfully crazy. Anything that makes you say, \u201cWooow!\ud83e\udee8 How?\u201d\ud83e\udd14 or... \u201cWhy?\ud83d\ude43\u201d, because that's definitely the kind of thing that leads people to OpenStreetMap! :)\nLet's explore the (OSM) world!\ud83e\udd29", "description": "Micromapping\ud83d\udd2c, 3D buildings\ud83c\udfe2, oddities\ud83c\udf7f, from intensely mapped islands to polished amusement parks, including castles and their meticulously drawn gardens, all accompanied by a little compilation of map bloopers.\n\nAt the same time, a look at various map visualizations, apps that use OSM, editors, community tools, and community life. (openstreetmap.org, CoMaps, OsmAnd, cartes.app, JOSM, TagInfo, OSM Wiki, community forums, etc.)", "recording_license": "", "do_not_record": false, "persons": [{"code": "BSHHCZ", "name": "CapitaineMoustache", "avatar": "https://pretalx.com/media/avatars/NCQ9XM_cENE8ax.webp", "biography": "An OpenStreetMap enthusiast since 2014.\nA guy with a long mustache who loves to map sparsely populated areas to the extreme.\n\n- [Bicycle Surveyor on Panoramax (GoPro Max 2)](https://panoramax.openstreetmap.fr/?background=streets&focus=map&map=11.93/46.14135/4.19608&speed=250&theme=default&users=f46ac4e4-7734-45e9-aa34-b660bcd1fa24)\n- Multipolygon Exploder on JOSM\n- Itch on address data (see [Schema of Charlieu](https://wiki.openstreetmap.org/wiki/Le_Sch%C3%A9ma_de_Charlieu_:_une_proposition_autour_des_adresses) and \u201ccontact:housenumber\u201d)\n- [An irregular OpenStreetMap videographer on PeerTube](https://peertube.openstreetmap.fr/c/capitainemoustache_channel/videos)", "public_name": "CapitaineMoustache", "guid": "fc526e71-8ec0-5a2b-b36a-4c715a979b39", "url": "https://pretalx.com/sotm2026/speaker/BSHHCZ/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/VUTQVY/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/VUTQVY/", "attachments": [{"title": "Wonders of OSM slide (all interactive with links on pictures)", "url": "/media/sotm2026/submissions/VUTQVY/resources/Wonders_of_OSM_uBrVHy2.pdf", "type": "related"}]}], "La R\u00e9union": [{"guid": "f122d73d-631a-5dc3-a05d-5b20e2aa851d", "code": "NRPPPV", "id": 95413, "logo": null, "date": "2026-08-30T09:30:00+02:00", "start": "09:30", "end": "2026-08-30T09:50:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-95413-where-are-my-ways", "url": "https://pretalx.com/sotm2026/talk/NRPPPV/", "title": "Where are my ways?", "subtitle": "", "track": "Mapping", "type": "Talk", "language": "en", "abstract": "The talk will present the web application *Where are my ways?*. It shows all deleted ways in their last visible version on the OpenStreetMap database. The talk will focus on the challenges raised by the OpenStreetMap data model and show how vandals can still evade such a tool. It will also present findings about the different types of deletions.", "description": "OpenStreetMap data has become the source for map data for outdoor activities. Hikers and cyclists sometimes use private tracks and paths or ways where they are not welcome. Some land owners or authorities delete those tracks and paths instead of adding proper access or lifecycle tags. Many deletions are reverted but some are overseen.\n\nOverpass Attic queries are the only soultion for end users and limited to a certain point of time in the past. In addition, overpass-api.de is overloaded.\n\nLiving in a region where almost all tracks and paths seem to be mapped, the author wondered what was mapped. In order to visit these locations and check a few of them, he developed a tool to find all deleted ways in a certain region of interest.\n\nThis talk will present *[Where are my ways?](https://michreichert.de/projects/wamy/)* It consists of a preprocessing toolchain and a map application showing all deleted OpenStreetMap ways as they appeard before their deletion.\n\nNodes and ways have independent histories in the OpenStreetMap data model. Modifying a node does not cause a way to get a new version. Merging ways is a deletion of one way from technical point of view. These challenges will by explained in the talk.\n\nThe talk will also present findings about the different types of deletions which have happened in OpenStreetMap.\n\nThe application is free software and available on [Codeberg](https://codeberg.org/nakaner/deleted-map).", "recording_license": "", "do_not_record": false, "persons": [{"code": "CWNVGR", "name": "Michael Reichert", "avatar": null, "biography": "Michael has been contributing to OpenStreetMap since 2011 and a member of FOSSGIS e.V. and OpenStreetMap Foundation. He is focused on railways, cycling and hiking. He regularly reverts other bad edits. Sometimes, he uses questionable edits as targets for cycling or hiking trips. He maintains openrailwaymap.org in his spare time.", "public_name": "Michael Reichert", "guid": "17dcffa8-ff6e-5633-bc55-cdb7dc6f6739", "url": "https://pretalx.com/sotm2026/speaker/CWNVGR/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/NRPPPV/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/NRPPPV/", "attachments": [{"title": "slides", "url": "/media/sotm2026/submissions/NRPPPV/resources/Reichert_Where_Ar_BXDhddG.pdf", "type": "related"}]}, {"guid": "2f6aa53f-9489-5727-a1db-3d9638b34a52", "code": "DDJRVU", "id": 96772, "logo": null, "date": "2026-08-30T10:05:00+02:00", "start": "10:05", "end": "2026-08-30T10:25:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-96772-comaps-how-to-make-a-community-based-map-navigation-app-based-on-openstreetmap", "url": "https://pretalx.com/sotm2026/talk/DDJRVU/", "title": "CoMaps - How to make a community-based map & navigation app based on OpenStreetMap", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "CoMaps started in May 2025 as a fork of Organic Maps, with the goal of providing digital maps and navigation tools that are 100% open source and transparently made by and for community. Since then, the community has shipped ~2 updated app versions per month. Among other things, those have improved core features, made the app more international, expanded the integration with the OSM ecosystem and reduced the existence of single points of failures in the provisioning of the app. Here, we share some of updates, how CoMaps is governed and how you can get involved.", "description": "CoMaps is a project that creates digital map applications that exists for Android, iOS and Linux and is based on a wide range of open data commons, which of course includes OpenStreetMap - but also other allied projects such as Wikipedia, Wikimedia Commons, and Panoramax. The project is focused on providing tools that center on respecting people\u2019s privacy and on being able to use use its features offline. As of April 2026, around 11 months after the project started, the CoMaps community consists of around 50 contributors who have helped the development of CoMaps, >250 translators who are working on providing the project in ~80 languages, and thousands of engaged users who provide feedback, support, feature ideas and more via various channels, from the Codeberg software forge over various language-specific Matrix channels to Mastodon and other social media channels.\n\nCollectively, the community\u2019s goal is to ensure that the projects remains free and open source software. To that end, CoMaps has been actively working on how to implement collective approaches for collective decision making and governance, as well as on improving the CoMaps application and the backend infrastructure, to ensure that the CoMaps contributor community does not become a single point of failure or bottleneck.\n\nIn its collective decision making, CoMaps has been experimenting with how to implement different methods since its initial announcement. The project\u2019s name, color scheme and logo were each decided in a collaborative process, in which people could add their suggestions and where the final outputs were selected in an open voting scheme after several rounds of refinements (and which nevertheless did **not** result in the name _Mappy McMapFace_!). In a similar way, the CoMaps contributor community continues to work together in order to refine and improve its decision making processes and collective goal setting, through an ongoing dialogue that focuses on finding consensus where possible, using voting as a last resort. Through this, the project already adopted guidelines for the (in)acceptable use of artificial intelligence within the project and refined its mission statement, to help outline the broad development direction.\n\nThe project takes a similar collaborative approach to provisioning and maintaining its infrastructure: To ensure that CoMaps users can quickly download maps for offline use, the project runs a small content delivery network, consisting of currently 6 servers around the globe, half of which are donated \u201cin kind\u201d by contributors, including the French OpenStreetMap chapter. These donated servers are complemented by rented hardware, which are also used for creating the custom map files that CoMaps uses and that combine data from OpenStreetMap, Wikipedia and other openly licensed data sources. This is made possible thanks to the generous donations from people around the globe. Following CoMaps commitment to transparency, all income and expenses can be viewed on the project\u2019s OpenCollective page. So far, the project exclusively uses donations for paying for infrastructure (servers, domains, \u2026) or smaller expenses like ordering stickers to share at conferences like SotM or FOSDEM, while all contributions are made by unpaid volunteers, from software development and design , over support, to outreach and community engagement.\n\nOn a technological level, the CoMaps project has been implementing a range of new features. Among those are an improved routing engine, expanded integrations for more languages (including offline Wikipedia articles, support for right-to-left languages), and expanding the POI pages to include data such as links to Panoramax and displaying the \u201clast checked\u201d dates from OSM. To make CoMaps an even better citizen of the OSM ecosystem, the integrated editor for OSM has also been expanded to support a wider range of objects. As part of the project\u2019s dedication to avoid reliance on external infrastructure, CoMaps also supports the self-hosting of the map files since December 2025, instead of exclusively relying on CoMaps\u2019 own content delivery network. This additionally allows supporting new use cases, for example the local serving of map files in regions without internet connection, for example in the field in disaster situations or humanitarian deployments.\n\nIn this talk, we aim to showcase these social and community aspects of how CoMaps has grown, continues to work as a collaborative project today, as well as dive into some of those technical details of how CoMaps has already improved since its first release in 2025, and showcase how those changes came to be. Furthermore, we will give an idea of some of the larger pieces of work that are currently ongoing to improve CoMaps and make it even more useful for a wide range of users, including the work on large feature ideas such as real-time traffic and public transit integrations. Lastly, we want to invite people to join us in co-developing CoMaps, ensuring that it continues growing into a serious alternative for commercial map and navigation applications.", "recording_license": "", "do_not_record": false, "persons": [{"code": "LYN9AL", "name": "Bastian Greshake Tzovaras", "avatar": null, "biography": "Bastian is an interdisciplinary researcher who works on the theory & practice of peer-production and citizen science, he has co-led and contributes to a wide range of FLOSS efforts covering many domains. Since ~May/June 2025, he has tried putting his skills to use to help the CoMaps project.\n\nYou can learn more about him and his work at https://tzovar.as", "public_name": "Bastian Greshake Tzovaras", "guid": "00d805ad-135a-582f-b5a1-41c01140e68f", "url": "https://pretalx.com/sotm2026/speaker/LYN9AL/"}, {"code": "TKMBNA", "name": "Diego Miguel Lozano", "avatar": "https://pretalx.com/media/avatars/UXC88X_DSakER1.webp", "biography": "Diego is passionate about free software and the communities behind it. In his free time, he contributes to open-source projects or relaxes by mapping on OpenStreetMap, with most of his contributions centered around Alicante (Spain). He is currently pursuing a PhD in Computer Science, having completed a bachelor's and master's degree in the same field.", "public_name": "Diego Miguel Lozano", "guid": "6ee9c520-bea8-5266-9954-6806403723d7", "url": "https://pretalx.com/sotm2026/speaker/TKMBNA/"}], "links": [{"title": "Code repository", "url": "https://codeberg.org/comaps/comaps", "type": "related"}, {"title": "CoMaps website", "url": "https://www.comaps.app/", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/DDJRVU/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/DDJRVU/", "attachments": [{"title": "Slides", "url": "/media/sotm2026/submissions/DDJRVU/resources/main_hwZxe1I.pdf", "type": "related"}]}, {"guid": "498a7423-8ecd-5592-98fa-0b46213fe6ae", "code": "XDLP7V", "id": 98505, "logo": null, "date": "2026-08-30T11:15:00+02:00", "start": "11:15", "end": "2026-08-30T11:35:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-98505-lightning-talks-iv", "url": "https://pretalx.com/sotm2026/talk/XDLP7V/", "title": "Lightning Talks IV", "subtitle": "", "track": "Lightning Talks", "type": "Talk", "language": "en", "abstract": "* Mapping agricultural cooperatives in Africa with MapComplete and Panoramax\n* OSM - Wikidata linking update\n* BreadNear.me\n* \"Milk types\" proposal (Luna)\n* Being a MapLibre maintainer in the age of LLMs", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "SNKPLF", "name": "SotM Working Group", "avatar": null, "biography": null, "public_name": "SotM Working Group", "guid": "f6fa5674-5726-564b-8067-4c97aa612977", "url": "https://pretalx.com/sotm2026/speaker/SNKPLF/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/XDLP7V/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/XDLP7V/", "attachments": []}, {"guid": "e53ac97f-1a23-57b8-b58e-500f7b89acc3", "code": "FJYCMJ", "id": 96906, "logo": null, "date": "2026-08-30T11:50:00+02:00", "start": "11:50", "end": "2026-08-30T12:10:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-96906-un-mappers-building-local-capacities-and-communities-to-support-peace-with-openstreetmap", "url": "https://pretalx.com/sotm2026/talk/FJYCMJ/", "title": "UN Mappers: Building Local Capacities and Communities to Support Peace with OpenStreetMap", "subtitle": "", "track": "Community and Foundation", "type": "Talk", "language": "en", "abstract": "The UN Maps Programme, an initiative from the Department of Operational Support at the United Nations, provides topographic maps, operational geo-information, search and navigation tools, and imagery and street-level base maps to peacekeeping and humanitarian actors in UN mission areas. UN Maps has established a community of OpenStreetMap (OSM) data contributors called UN Mappers. The UN Mappers community is a collective of open mapping enthusiasts dedicated to building accurate, crowdsourced geospatial data to support peacekeeping and humanitarian missions on the ground.\nThe session will provide updates about the UN Maps programme and the UN Mappers community, focusing on our co-created pilot initiative that aims to build sustainable and community-owned geospatial data and capacity building for OSM/open data contributors, the UN Maps Ambassadors and Chapters. We hope to discuss lessons learned, challenges, and opportunities for collaboration to further this initiative.", "description": "The session will provide updates about the UN Maps programme and the UN Mappers community, focusing on our co-created pilot initiative that aims to build sustainable and community-owned geospatial data and capacity building for OSM/open data contributors, the UN Maps Ambassadors and Chapters. We hope to discuss lessons learned, challenges, and opportunities to collaborate and further this initiative.", "recording_license": "", "do_not_record": false, "persons": [{"code": "JYPRZC", "name": "Laura Mugeha", "avatar": "https://pretalx.com/media/avatars/KEEP87_a80gesX.webp", "biography": "Laura is a Geospatial engineer working at the intersection of open data, free and open-source software, and sustainable development. Committed to building for impact, she harnesses the power of technology to drive positive change. \n\nIn her free time, Laura volunteers with tech communities. She currently sits on the OpenStreetMap Foundation board to support the OpenStreetMap community, a worldwide mapping effort to create and provide free geographic data to anyone, anywhere, with no restrictions.", "public_name": "Laura Mugeha", "guid": "e0f96846-87b7-5b0e-ac8b-914ff78062f4", "url": "https://pretalx.com/sotm2026/speaker/JYPRZC/"}, {"code": "B3GNDK", "name": "Diego Gonzalez Ferreiro", "avatar": null, "biography": null, "public_name": "Diego Gonzalez Ferreiro", "guid": "cd3ad805-c97a-5568-849d-b0a0e9dc08e4", "url": "https://pretalx.com/sotm2026/speaker/B3GNDK/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/FJYCMJ/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/FJYCMJ/", "attachments": []}, {"guid": "8d6a7130-526d-5484-be45-44974d2a7ea5", "code": "S9MD3B", "id": 97002, "logo": null, "date": "2026-08-30T12:25:00+02:00", "start": "12:25", "end": "2026-08-30T12:45:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-97002-milan-to-paris-via-dundee-ohsome-2-0-has-arrived", "url": "https://pretalx.com/sotm2026/talk/S9MD3B/", "title": "Milan to Paris via Dundee: ohsome 2.0 has arrived!", "subtitle": "", "track": "Software Development", "type": "Talk", "language": "en", "abstract": "The ohsome framework makes OSM data analysis, data quality assessment and data download simple - for community members, researchers and developers. SOTM 2026 marks a fundamental milestone for us as we want to **introduce ohsome-planet** and **release ohsome API v2.0**. During this talk you can get insights about design decisions, new features, common use cases and the road map ahead.", "description": "What makes the processing and analysis of OSM data at global scale challenging? There are at least three things worth pointing out:\n\n1. Raw OSM data doesn\u2019t come in GIS-ready format. You can\u2019t easily filter for points or polygons or by geographic area. \n2. OSM\u2019s database has massively grown over the past 20 years and as of today the data doesn\u2019t fit on a usual consumer laptop anymore. The OSM planet history .pbf file has about 150 GB. \n3. Third, OSM data is scattered, e.g. latest information about elements, information about edit history and changeset information come from different sources. Often you want to analyze these aspects together.\n\nTo tackle these problems, we are developing the ohsome framework for almost 10 years now. And we are still not done yet!\n\nWe have introduced the ohsome framework to the wider OSM community at State of the Map 2018 in Milan. At State of the Map Europe 2025 in Dundee we have talked about ohsomeDB, a powerful Postgres database extended with PostGIS and Citus that drastically improves performance for OSM analytics questions. Now, at SOTM 2026 we want to make these resources available for the OSM community by **introducing ohsome-planet** and releasing **ohsome API v2.0**. \n\nWe have developed [ohsome-planet](https://github.com/GIScience/ohsome-planet) in order to transform raw OSM data into a GIS-ready data format, namely Parquet with native Geo support. (Geo)Parquet comes with many advantages when working with very large spatial datasets and has been widely adopted in the GIS-tech domain. ohsome-planet does the processing heavy tasks of building geometries, including complex multipolygon relations, and enables you to join element with changeset information. With ohsome-planet we tackle the first challenge and bring raw OSM data into a GIS-ready format without loosing any detail or metadata. ohsome-planet can be used by anyone and also works with OSM raw data country extracts.\n\nThe [ohsome API](https://docs.ohsome.org/ohsome-api/v1/) helps reseachers and community members to analyse and extract OSM data and tackles challenge 2 (data size) and challenge 3 (scattered data sources). You can filter for tags, travel in time and tailor data analysis to your custom defined area-of-interest. As processing happens on the server side (at HeiGIT), you can analyse even large regions (e.g. countries) with a normal laptop. Due to major performance improvements, complex queries, e.g. calculating the proportion of all German roads that have a name tag, now only take a few seconds. With v2.0 you can also filter for changeset information, e.g. hashtags. \n\nTo summarize: In this talk we will describe the ohsome tech stack with a focus on ohsome-planet and ohsome API. We will show an usage of the ohsome API v2.0 to create country data quality reports that inspect various dimensions of data quality such as completeness, currentness and attribute completeness.\n\nIf you have used the ohsome API before, there is very likely a need to transition some of your scripts our analysis to the new structure. During the conference, we are very likely organizing a spontaneous / self-organized sessions to assist you with that. SOTM is an important event for us to collect feedback and problem reports from OSM community members and users of ohsome. We are curious to learn more about OSM and what you want to do with the data beyond creating beautiful maps.", "recording_license": "", "do_not_record": false, "persons": [{"code": "BPWU7S", "name": "Benjamin Herfort", "avatar": "https://pretalx.com/media/avatars/E8WPXD_TSk806K.webp", "biography": "Benjamin Herfort is researcher at HeiGIT and Heidelberg University. Benjamin leads the Technical Innovation Group at HeiGIT where he is helping to develop open source tools and methods that incorporate geographic information systems for disaster management, humanitarian aid and climate action.\n\nIn his PhD he has investigated questions of representation and data quality in OpenStreetMap. In his research and work he is furthermore dealing with the temporal evolution of OpenStreetMap data, MapSwipe and information from social media.", "public_name": "Benjamin Herfort", "guid": "3fb7b645-8189-5461-ba5e-78608f4e568f", "url": "https://pretalx.com/sotm2026/speaker/BPWU7S/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/S9MD3B/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/S9MD3B/", "attachments": [{"title": "ohsome_2.0_slides", "url": "/media/sotm2026/submissions/S9MD3B/resources/sotm_2026_herfort_qoAH741.pdf", "type": "related"}]}, {"guid": "cf3ffe9a-00d6-5b6e-b988-a688b5545a27", "code": "MRSUBA", "id": 96830, "logo": null, "date": "2026-08-30T14:30:00+02:00", "start": "14:30", "end": "2026-08-30T14:50:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-96830-here-be-rainbows-lgbtq-mapping-in-osm", "url": "https://pretalx.com/sotm2026/talk/MRSUBA/", "title": "Here be Rainbows: LGBTQ mapping in OSM", "subtitle": "", "track": "Mapping", "type": "Talk", "language": "en", "abstract": "This talk provides an overview of tagging practices for mapping LGBTQ+ venues and spaces in OSM, covering history of mapping. We'll talk about what sort of things can, and can't be tagged, what should, and should not, be mapped. Additionally the [Lgbtq:=* Revision](https://wiki.openstreetmap.org/wiki/Proposal:Lgbtq%3D*_Revision) tagging proposal will be discussed.\n\nThe aim is to offer a structured summary of current practices while outlining key limitations, supporting more informed and responsible contributions to OpenStreetMap.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "JA7GD8", "name": "Amanda McCann", "avatar": "https://pretalx.com/media/avatars/BFX3YR_6LrAPqo.webp", "biography": "Amanda McCann is a mapper and programmer originally for Ireland, but is now a queer trans woman living in Germany, and works at Geofabrik keeping servers online.\n\nShe's been active in OSM for 15+ years, doing things that keep her interested., such as running Irish historical mapping projects Townlands, being on the  OSM Foundation Board, and lately, hydrology mapping with WaterwayMap.org.\n\nOutside OSM, she enjoys hiking.", "public_name": "Amanda McCann", "guid": "1d214e56-0ebb-5399-bdf7-78aab94c8d33", "url": "https://pretalx.com/sotm2026/speaker/JA7GD8/"}, {"code": "M8NA8U", "name": "Erica 'spughetti' Temp", "avatar": "https://pretalx.com/media/avatars/CMZT3R_lrV4fHo.webp", "biography": "Erica 'spughetti' Temp is a queer mapper from the Netherlands. She began contributing to OSM in May of 2022 when in dire need of a new hobby. She currently does general OSM wizardry and community engagement at TomTom.\n\nSpughetti is passionate about humanitarian mapping, particularly mapping roads leading towards settlements in Africa that are currently missing entirely from the map.", "public_name": "Erica 'spughetti' Temp", "guid": "aef029ed-2615-5531-8ab2-f1acc9d0b547", "url": "https://pretalx.com/sotm2026/speaker/M8NA8U/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/MRSUBA/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/MRSUBA/", "attachments": [{"title": "Slides", "url": "/media/sotm2026/submissions/MRSUBA/resources/Here_be_Rainbows__50ddYsd.pdf", "type": "related"}]}, {"guid": "148d2fa5-1bf0-5503-99ca-3d00486d67ef", "code": "RY8MQP", "id": 97036, "logo": null, "date": "2026-08-30T15:05:00+02:00", "start": "15:05", "end": "2026-08-30T15:25:00+02:00", "duration": "00:20", "room": "La R\u00e9union", "slug": "sotm2026-97036-1000-ways-to-kill-openstreetmap-in-ghana-and-elsewhere-in-africa", "url": "https://pretalx.com/sotm2026/talk/RY8MQP/", "title": "1000 ways to kill OpenStreetMap in Ghana and elsewhere in Africa", "subtitle": "", "track": "Data Analysis & Data Model", "type": "Talk", "language": "en", "abstract": "OpenStreetMap contributions in Ghana and Africa continue to grow rapidly but one big question is how is this growth transforming and impacting the project's future. In this talk I share how decisions by both individual and organized mapping activities continue to create massive useless data in OpenStreetMap that nobody is ever going to use and how we can prevent more of such future occurrences.", "description": "Publicly available imagery in OSM might not always be up-to-date but massive data is being created with very old imagery in many parts of the continent. In this talk, I will travel through Ghana on OpenStreetMap showcase results of organized mapping activities that live in OSM almost forever; data in most cases is not usable. In doing this we will explore tools, methods and best practices to be aware of when contributing to OpenStreetMap in Ghana and somewhere else on the Africa continent either as an individual or organization.", "recording_license": "", "do_not_record": false, "persons": [{"code": "DC3PFW", "name": "Enock Seth Nyamador", "avatar": null, "biography": "I am a volunteer OpenStreetmap contributor and Free/Libre and Open Source Software enthusiast. I contribute to OpenStreetMap mostly in Ghana where I try to add new features and also fix many useless contributions from years and recent by both individual or organized remote mappers. I support [Good changeset comments](https://wiki.openstreetmap.org/wiki/Good_changeset_comments).", "public_name": "Enock Seth Nyamador", "guid": "45f196d7-4a2d-5455-972d-6901ab6220a5", "url": "https://pretalx.com/sotm2026/speaker/DC3PFW/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/RY8MQP/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/RY8MQP/", "attachments": []}], "Martinique": [{"guid": "fd32ac02-1668-5674-b0de-75d515af9d14", "code": "ZRRUJU", "id": 96679, "logo": null, "date": "2026-08-30T14:30:00+02:00", "start": "14:30", "end": "2026-08-30T14:50:00+02:00", "duration": "00:20", "room": "Martinique", "slug": "sotm2026-96679-making-maps-with-ultra", "url": "https://pretalx.com/sotm2026/talk/ZRRUJU/", "title": "Making maps with Ultra", "subtitle": "", "track": "Cartography", "type": "Talk", "language": "en", "abstract": "This talk will introduce Ultra, an alternative high-performance front-end to overpass, qlever, sophox, and more powered by MapLibre GL JS. It will cover the basics of how Ultra works: choosing a backend query service and authoring your query as well as how to style the query results using MapLibre.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "WLNGGS", "name": "Daniel Schep", "avatar": null, "biography": "Daniel Schep is a professional software engineer at onX maps and an amateur cartographer. At his day job he builds internal tooling for working with OpenStreetMap data. In his free time he has created Ultra, OpenTrailStash, and a few other open-source OSM-based projects and maps (see trailstash.net)", "public_name": "Daniel Schep", "guid": "84b9bd50-a43e-5b68-8d56-98cb4eb7bd5b", "url": "https://pretalx.com/sotm2026/speaker/WLNGGS/"}], "links": [{"title": "Ultra", "url": "https://overpass-ultra.us", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/ZRRUJU/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/ZRRUJU/", "attachments": []}, {"guid": "01edb0ba-e044-5afe-b1da-c1e309145c5b", "code": "WYKG8T", "id": 103425, "logo": null, "date": "2026-08-30T15:05:00+02:00", "start": "15:05", "end": "2026-08-30T15:25:00+02:00", "duration": "00:20", "room": "Martinique", "slug": "sotm2026-103425-lightning-talks-v", "url": "https://pretalx.com/sotm2026/talk/WYKG8T/", "title": "Lightning Talks V", "subtitle": "", "track": "Lightning Talks", "type": "Talk", "language": "en", "abstract": "* Investigating Hospitality (SK53)\n* Cartography with tilemaker (Richard Fairhurst)\n* Nik5 - a C++ port of Nik4 (Michael Reichert)\n* Linear maps for shopping streets (Robert Whittaker)\n* Exploring bike share time series availability data with DuckDB", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "SNKPLF", "name": "SotM Working Group", "avatar": null, "biography": null, "public_name": "SotM Working Group", "guid": "f6fa5674-5726-564b-8067-4c97aa612977", "url": "https://pretalx.com/sotm2026/speaker/SNKPLF/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/WYKG8T/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/WYKG8T/", "attachments": []}, {"guid": "a5ca23e3-f6cc-58e0-9ea7-7919b06b69fc", "code": "GSZW7S", "id": 94854, "logo": null, "date": "2026-08-30T15:40:00+02:00", "start": "15:40", "end": "2026-08-30T16:00:00+02:00", "duration": "00:20", "room": "Martinique", "slug": "sotm2026-94854-useosm-promoting-openstreetmap-data-usage-and-impact-through-an-open-and-accessible-web-platform", "url": "https://pretalx.com/sotm2026/talk/GSZW7S/", "title": "UseOSM: Promoting OpenStreetMap Data Usage and Impact Through an Open and Accessible Web Platform", "subtitle": "", "track": "Community and Foundation", "type": "Talk", "language": "en", "abstract": "OpenStreetMap is one of the most powerful open geospatial datasets in the world, yet for many who stand to benefit most from it, it remains invisible. NGO workers planning humanitarian responses, students conducting research, local planners building community infrastructure, and developers looking to build location-aware applications often don't know where to start, which tools to use, or how OSM can realistically achieve their goals for their work.\n\n[UseOSM](https://www.useosm.org/) is a community-driven platform built to close that gap. It brings together tools, real-world use cases, and community stories in one accessible place, presented in plain language that anyone can understand, not just experienced mappers.\n\nThis talk will walk through the full vision and current state of [UseOSM](https://www.useosm.org/), covering:\n\n- Why [UseOSM](https://www.useosm.org/) exists  \u2014 the visibility and discovery gap that motivated the platform, and why making OSM's impact legible to the wider world matters for data quality and community growth alike.\n\n- How anyone can get value from it \u2014 whether you're an NGO seeking the right tools for field data collection, a researcher looking for project inspiration, or a developer hunting for OSM-powered software to build on or learn from.\n\n- How to contribute content: a walkthrough of the contribution guidelines for adding use cases, project spotlights, statistics, and stories that reflect the true breadth of what OSM data powers.\n\n- How developers can contribute \u2014 a clear onboarding path for technical contributors who want to help build and improve the platform itself.\n\n- What comes next \u2014 the repository maintenance workflow, governance model, and a preview of upcoming features on the platform roadmap.\n\nThe core argument is simple: the more people understand what OpenStreetMap makes possible, the more motivated they become to use and to contribute well. Every navigation app, every humanitarian response tool, every urban planning dataset quietly powered by OSM is a missed opportunity to inspire a new contributor or spark a new creative project. [UseOSM](https://www.useosm.org/) turns those quiet successes into visible, shareable stories.", "description": "This session is relevant to anyone interested in OSM community growth, onboarding, outreach, and open data ecosystems. It sits at the intersection of advocacy, documentation, and platform development and is aimed at a broad audience, not just developers.\nThe session will be interactive, with live demonstrations of the platform and an open call for community contributions. Attendees will leave with a clear understanding of how to use and contribute to UseOSM, and why surfacing OSM's real-world impact is one of the most effective tools we have for growing a healthier, more diverse mapping community.", "recording_license": "", "do_not_record": false, "persons": [{"code": "W3U3D8", "name": "Victor Ademoyero", "avatar": "https://pretalx.com/media/avatars/9VUNAG_I6NlptN.webp", "biography": "[Victor Ayomide Ademoyero](https://victorademoyero.com) is a Geospatial Frontend Engineer with over four years of experience and a Copernicus Master\u2019s student in Digital Earth [(CDE)](https://master-cde.eu/) at the University of Salzburg, Austria. He holds a degree in Remote Sensing and Geoscience Information System (RSG), with strong expertise in GIS, Earth Observation, geospatial analysis, and field data collection. He has worked with organizations where he builds scalable, user-focused geospatial applications. His technical expertise includes front-end frameworks, interactive web mapping libraries, spatial data visualization, and open-source geospatial tools.", "public_name": "Victor Ademoyero", "guid": "db2b2bd9-4bdd-589d-a110-44b88185160c", "url": "https://pretalx.com/sotm2026/speaker/W3U3D8/"}, {"code": "DMQEBL", "name": "Emmanuel Jolaiya", "avatar": null, "biography": null, "public_name": "Emmanuel Jolaiya", "guid": "d77e8cd7-4aa8-5335-bdc2-e9dac56b9e9c", "url": "https://pretalx.com/sotm2026/speaker/DMQEBL/"}], "links": [{"title": "Presentation Slide", "url": "https://docs.google.com/presentation/d/1-cW9LhtDjO1VQWz_8pjAubRAkhRPWcUZNefKvngXHmA/edit?usp=sharing", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/GSZW7S/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/GSZW7S/", "attachments": [{"title": "Slides", "url": "/media/sotm2026/submissions/GSZW7S/resources/UseOSM_-_SOTM_Par_p7mVOFd.pdf", "type": "related"}]}, {"guid": "24333e9c-5380-5e14-871f-a459defc56bd", "code": "RHY7NP", "id": 98508, "logo": null, "date": "2026-08-30T16:45:00+02:00", "start": "16:45", "end": "2026-08-30T17:05:00+02:00", "duration": "00:20", "room": "Martinique", "slug": "sotm2026-98508-closing", "url": "https://pretalx.com/sotm2026/talk/RHY7NP/", "title": "Closing", "subtitle": "", "track": "Community and Foundation", "type": "Talk", "language": "en", "abstract": "We say goodbye to this year\u2019s State of the Map conference and to Paris. You will see some impressions from the conference and we say thank you to all volunteers and to the local team in Paris. We hope that we can already announce the venue of State of the Map 2027.", "description": "", "recording_license": "", "do_not_record": false, "persons": [{"code": "SNKPLF", "name": "SotM Working Group", "avatar": null, "biography": null, "public_name": "SotM Working Group", "guid": "f6fa5674-5726-564b-8067-4c97aa612977", "url": "https://pretalx.com/sotm2026/speaker/SNKPLF/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/RHY7NP/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/RHY7NP/", "attachments": []}], "Corse": [{"guid": "94bf6682-a70c-5bee-847d-b081201e67c4", "code": "UBZ3PL", "id": 105296, "logo": null, "date": "2026-08-30T14:30:00+02:00", "start": "14:30", "end": "2026-08-30T15:30:00+02:00", "duration": "01:00", "room": "Corse", "slug": "sotm2026-105296-panoramaxing-the-local-hiking-route-500m-from-here", "url": "https://pretalx.com/sotm2026/talk/UBZ3PL/", "title": "Panoramaxing the local hiking route 500m from here", "subtitle": "", "track": "Birds of a Feather/BOF Session", "type": "Birds of a Feather/BOF Session", "language": "en", "abstract": "Please meet at the whiteboards for the BoFs.", "description": "", "recording_license": "", "do_not_record": false, "persons": [], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/UBZ3PL/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/UBZ3PL/", "attachments": []}], "Tahiti": [{"guid": "5400a721-5015-56ee-940b-cf618b0c26ea", "code": "EPRSWT", "id": 96861, "logo": null, "date": "2026-08-30T09:30:00+02:00", "start": "09:30", "end": "2026-08-30T10:30:00+02:00", "duration": "01:00", "room": "Tahiti", "slug": "sotm2026-96861-future-of-the-openstreetmap-foundation", "url": "https://pretalx.com/sotm2026/talk/EPRSWT/", "title": "Future of the OpenStreetMap Foundation", "subtitle": "", "track": "Community and Foundation", "type": "Workshop", "language": "en", "abstract": "The OpenStreetMap Foundation owns the OpenStreetMap hardware and trademarks. It uses money to keep the platform running.\n\nThe Foundation sees the positive impact of current paid work, but has not yet to funds to sustain all that activity. In this workshop we ask the attendants as members of the OpenStreetMap community for advice how to raise the funds.", "description": "The OpenStreetMap Foundation support but does not control OpenStreetMap. It is the legal entity that owns the hardware and holds the copyrights and trademarks for OpenStreetMap.\n\nThe Foundation nowadays not only employs a Senior Site Reliability Engineer to fend off cyber attacks and AI backscatter, but also funds the development of vector tiles and iD. In last year and this year, the support of the Sovereign Tech Fund also enabled to realize a lot of development from the website's backlog.\n\nHowever, the income of the Foundation does not yet sustain all these tasks. In this workshop we ask the attendants as members of the OpenStreetMap community what sources of income the Foundation ideally should have and what measures it shall or at least may take. Shall we really ask our mappers although they volunteer already with time? Is this tenable still when it is recurring yearly? How much money do we want or accept from a single large donor before the influence is too big? Or shall we try the infamous Wikipedia style banners? Even if our actual users sit behind third party apps and never see the openstreetmap.org website?", "recording_license": "", "do_not_record": false, "persons": [{"code": "YLS7NU", "name": "Roland Olbricht", "avatar": null, "biography": "I'm drolbr as a mapper and volunteer to develop software for OpenStreetMap since 2008. Currently I am serving as the treasurer of the OpenStreetMap Foundation. I'm otherwise best known for the software Overpass API. But I'm also interested in mapping for pedestrian routing. In addition, I'm at the moment serving in the Engineering Working Group and as a OSMF board member.\n\nFor a day job I'm developing software for public transit. While my employer and our customers profit a lot from OpenStreetMap, my actual job is doing the software for ticket vending.", "public_name": "Roland Olbricht", "guid": "ceb01113-5a76-5428-be8a-687a87f9118d", "url": "https://pretalx.com/sotm2026/speaker/YLS7NU/"}], "links": [], "feedback_url": "https://pretalx.com/sotm2026/talk/EPRSWT/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/EPRSWT/", "attachments": []}, {"guid": "979ee9a0-968d-5909-a665-831ab088542d", "code": "NPZRV9", "id": 96759, "logo": null, "date": "2026-08-30T11:15:00+02:00", "start": "11:15", "end": "2026-08-30T12:15:00+02:00", "duration": "01:00", "room": "Tahiti", "slug": "sotm2026-96759-experience-centimeter-accuracy-surveying-with-the-open-network-centipede-rtk", "url": "https://pretalx.com/sotm2026/talk/NPZRV9/", "title": "Experience centimeter accuracy surveying with the open network Centipede-RTK", "subtitle": "", "track": "Mapping", "type": "Workshop", "language": "fr", "abstract": "Centipede-RTK is a free and collaborative network for sharing open GNSS RTK data. This network enables you to obtain centimeter accuracy geolocation. Initiated in France in 2019, the project quickly spreads over Europe and the entire World.\nOpenStreetMap (and Panoramax) contributors can take this opportunity to create more accurate, more detailed data.\n\nDuring this workshop, you will use an RTK receiver (provided) by pairing it with your Android smartphone (not provided). You will install an \u00ab NTRIP client \u00bb app and set it up to access the Centipede-RTK caster. The NTRIP client will then supply the geolocation to your favorite mapping app. A short walk outside will enable you to check and appreciate the accuracy achieved.\n\nThe workshop will be held in french and english, by St\u00e9phane P\u00c9NEAU (developer of RTKBase software, which powers most of the Centipede-RTK bases) and his colleagues from Carto\u2019Cit\u00e9.\n\nPrerequisite : you must have an Android phone on which you can install an \"NTRIP client\" app, such as Bluetooth GNSS.", "description": "# French version\n\n## Titre\nGo\u00fbtez aux relev\u00e9s terrain avec une pr\u00e9cision centim\u00e9trique gr\u00e2ce au r\u00e9seau Centipede-RTK\n\n## Format\nAtelier de 90 minutes\n\n## R\u00e9sum\u00e9\nCentipede-RTK est un plateforme collaborative pour cr\u00e9er un r\u00e9seau GNSS RTK libre. Ce r\u00e9seau vous donne acc\u00e8s \u00e0 un positionnement avec une pr\u00e9cision de quelques centim\u00e8tres. Initi\u00e9 en France en 2019, le projet s'\u00e9tend rapidement en Europe et dans le Monde. Les contributeurs OpenStreetMap ou Panoramax peuvent en profiter pour cr\u00e9er des donn\u00e9es plus pr\u00e9cises, plus d\u00e9taill\u00e9es.\n\nAu cours de cet atelier, vous utiliserez un r\u00e9cepteur RTK (fourni) en l'associant \u00e0 votre smartphone Android (non fourni). Vous installerez une application \u00ab Client NTRIP \u00bb et la param\u00e9trerez pour acc\u00e9der au r\u00e9seau Centipede-RTK. Vous utiliserez ensuite ce client NTRIP pour fournir la g\u00e9olocalisation \u00e0 votre application de cartographie favorite. Un parcours en ext\u00e9rieur vous permettra de v\u00e9rifier et appr\u00e9cier la pr\u00e9cision obtenue.\n\nL'atelier sera anim\u00e9 en fran\u00e7ais et en anglais, par St\u00e9phane P\u00c9NEAU (d\u00e9veloppeur du logiciel RTKBase, qui fait tourner la majorit\u00e9 des bases du r\u00e9seau Centipede) et ses coll\u00e8gues de Carto\u2019Cit\u00e9.\n\nPr\u00e9-requis : vous devez disposer d'un t\u00e9l\u00e9phone Android, sur lequel vous pouvez installer une application \u00ab client NTRIP \u00bb (par ex. Bluetooth GNSS).", "recording_license": "", "do_not_record": false, "persons": [{"code": "Q9HJGS", "name": "St\u00e9phane P\u00e9neau", "avatar": null, "biography": "### english\nA low-cost RTK explorer for 10 years, I designed the GNSS base stations that are the majority of those used on the Centipede-RTK network. I primarily use the network when collecting photos for Panoramax.\n\n### french\nExplorateur en RTK low cost depuis 10 ans, j'ai con\u00e7u les bases Gnss pr\u00e9sentes en majorit\u00e9 sur le r\u00e9seau Centipede-RTK. J'utilise le r\u00e9seau principalement lorsque je fais de la collecte de photos pour Panoramax.\nDepuis 2024 je suis le pr\u00e9sident de l'association Centipede-RTK.", "public_name": "St\u00e9phane P\u00e9neau", "guid": "e7f3c48e-2eb3-505d-828e-b2983045d032", "url": "https://pretalx.com/sotm2026/speaker/Q9HJGS/"}], "links": [{"title": "Centipede-RTK", "url": "https://www.centipede-rtk.org/", "type": "related"}], "feedback_url": "https://pretalx.com/sotm2026/talk/NPZRV9/feedback/", "origin_url": "https://pretalx.com/sotm2026/talk/NPZRV9/", "attachments": []}, {"guid": "196cdcbe-3925-5380-a6cc-9c5f05be8467", "code": "G9GXNA", "id": 96736, "logo": null, "date": "2026-08-30T14:30:00+02:00", "start": "14:30", "end": "2026-08-30T15:30:00+02:00", "duration": "01:00", "room": "Tahiti", "slug": "sotm2026-96736-let-s-create-your-own-josm-paint-style", "url": "https://pretalx.com/sotm2026/talk/G9GXNA/", "title": "Let's create your own JOSM paint style!", "subtitle": "", "track": "Software Development", "type": "Workshop", "language": "en", "abstract": "There are already existing many JOSM paint styles for different usecases. But didn't you always felt like hm yes this is very useful but I would prefer if it shows in red instead of green because in my area this is not visible enough. Or you working with a special niche data that haven't been covered by another paint style yet. Why not make your own? Let's explore the openness of JOSM and use it for our benefit.", "description": "This workshop about JOSM paint styles will be divided into sections:\n- What is a JOSM paint style and how to discover the existing ones?\n- Why and how you can create your very own that will fit your exact needs because it is gonna be built by you\n- How to share your creation with the world\n\nHere is Filip009 railway signals JOSM paintstyle https://github.com/Patrik-Br/My-JOSM/blob/main/Paint_style%2FRailway_paintstyle_by_Filip009.zip", "recording_license": "", "do_not_record": false, "persons": [{"code": "3KTNGX", "name": "Patrik Brigant", "avatar": "https://pretalx.com/media/avatars/GLQV3T_BqxeMGr.webp", "biography": "Patrik works as a Missing Maps GIS Officer at M\u00e9decins Sans Fronti\u00e8res (MSF). \n\nPatrik started contributing into OSM thanks to a Missing Maps mapathon Bratislava in January 2020. Since then he became one of the core members of Missing Maps Czechia/Slovakia, Missing Maps London, wrote down multivalidation workflow for validating tasks on HOT Tasking Manager as his OSM diary post, created his own JOSM paint style, set of rules for JOSM validation plugin and currently maintaining the missingmaps.org website. 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