Good catch. I live in Berlin and use this sometimes, and I hadn't actually noticed that disclaimer before. (For future reference, it's under "Position der Fahrt

Good catch. I live in Berlin and use this sometimes, and I hadn't actually noticed that disclaimer before. (For future reference, it's under "Position der Fahrten" on [1].) Munich's live S-Bahn map[1] takes a slightly different approach: Um die Position der S-Bahnen auf der Karte anzuzeigen, werden die Positionsmeldungen der Züge an ausgewählten Signalstandorten erfasst und dazwischen hochgerechnet. Es handelt sich somit derzeit um keine GPS-Ortung. (from "So funktioniert's" on [2]) So they don't actually use GPS positioning either, but they do interpolate from data that comes from their rail signalling system, which I imagine is a bit more precise than using realtime departures and arrivals in hh:mm. [1] http://www.vbb.de/de/article/fahrplanauskunft/vbb-livekarte/20046.html http://www.vbb.de/de/article/fahrplanauskunft/vbb-livekarte/... [2] http://s-bahn-muenchen.hafas.de/bin/540/help.exe/dn?tpl=livefahrplan http://s-bahn-muenchen.hafas.de/bin/540/help.exe/dn?tpl=live... [3] http://www.s-bahn-muenchen.de/s_muenchen/view/fahrplan/echtzeit.shtml http://www.s-bahn-muenchen.de/s_muenchen/view/fahrplan/echtz...