Most passenger US rail systems have APIs with realtime positions but I don't know of a single map that includes all of them in the whole country. Here's a live

Most passenger US rail systems have APIs with realtime positions but I don't know of a single map that includes all of them in the whole country. Here's a live one for Boston: https://tmap.live/ https://tmap.live/ Here's a live one for NYC: https://aptransit.co/ https://aptransit.co/ Here's one for Amtrak: https://amtraker.com/map https://amtraker.com/map For your son though just get the "Transit" app by CityMapper