Benjamin Demonet
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.
As 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.
Session
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 (700 train sets).
We 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 — from studying the impact of building footprints to managing zoom levels — 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.