An interactive exploration of Boston's subway system (2014)(mbtaviz.github.io) |
An interactive exploration of Boston's subway system (2014)(mbtaviz.github.io) |
The station entrance/exits can be harder to track unless you are required to tag off. In the Bay Area BART publishes this info, I think as an Excel file.
Realtime info varies wildly, but a number of agencies (including BART) have jumped on the GTFS Realtime bandwagon. Muni went with NextBus which used to have a publicly accessible API (and that use to "hide" very detailed info), but it looks like everyone's favorite conglomerate, Cubic, destroyed that when they acquired NextBus.