You might be interested in the Walk Score Transit API. In addition to surfacing a "transit score" for a given area, it also provides a simple RESTful way to get

You might be interested in the Walk Score Transit API. In addition to surfacing a "transit score" for a given area, it also provides a simple RESTful way to get stops and routes at a given lat/lon: http://www.walkscore.com/professional/public-transit-api.php http://www.walkscore.com/professional/public-transit-api.php The Walk Score API is built on top of the GTFS Data Exchange web site and APIs. GTFSDE is a clearinghouse for the latest GTFS data worldwide: http://www.gtfs-data-exchange.com/ http://www.gtfs-data-exchange.com/ (Note that raw GTFS from agencies is often quite buggy -- the Walk Score API does a ton of work to clean it up and fix errors.) Finally, the City Go Round web site and API surfaces apps that make use of transit (and other local) data: http://www.citygoround.org/ http://www.citygoround.org/ Hope these are interesting for you!