It's mentioned in the 'about' page (click the 'i' link) - https://news.ycombinator.com/reply?id=32647603&goto=item%3Fid%3D32647227%2332647603 https://news.ycomb

It's mentioned in the 'about' page (click the 'i' link) - https://news.ycombinator.com/reply?id=32647603&goto=item%3Fid%3D32647227%2332647603 https://news.ycombinator.com/reply?id=32647603&goto=item%3Fi... > Schedules are extracted from the GTFS data of the VBB (loaded on Fri, 26 Aug 2022 13:11:26 GMT) which contains arrival time and departure time of every hour of every day. The movement of the train is simulated at constant speed between stations.