SF Bay Area's Regional GTFS Realtime Feed

Last year, Interline and the Metropolitan Transportation Commission released the Regional GTFS Feed for the San Francisco Bay Area and also a series of improvements to the static data including station pathways and fares. We’re now pleased to announce a single consolidated Regional GTFS Realtime feed.

Developers can combine the static Regional GTFS Feed and the Regional GTFS Realtime endpoints for comprehensive and up-to-date views of the Bay Area’s bus, train, and ferry services. Combining feeds is straightforward, as the same ID schemes are used for data entities across all feeds.

21 agencies included

The Regional GTFS Realtime Feed currently aggregates data for the following Bay Area transit agencies:

Operator NameService AlertsTrip UpdatesVehicle Positions
AC Transit
Bay Area Rapid Transit (BART)-
County Connection
Dumbarton Express Consortium
Emery Go-Round
Fairfield and Suisun Transit
Golden Gate Transit (GGT)
Livermore Amador Valley Transit Authority (LAVA)
Marin Transit
Petaluma Transit
San Francisco Municipal Transportation Agency (SFMTA)
Santa Rosa CityBus
Sonoma County Transit
Sonoma Marin Area Rail Transit (SMART)
Tri Delta Transit
Union City Transit
VINE Transit
Valley Transportation Authority (VTA)

MTC will be announcing additional agencies providing GTFS Realtime data in the future.

Built using shared tooling and validation processes

Like the static Regional GTFS Feed, the Regional GTFS Realtime Feed is build using Interline’s open-source tooling, including the transitland-lib software library.

While developing the Regional GTFS Realtime Feed, our teams wanted to ensure that the process of merging together all the individual input agency feeds into the single set of output endpoints did not introduce any additional data errors. We made us of the same GTFS Realtime validation tooling and test process as we recently described in a Transportation Research Board report by Interline and our partners at University of South Florida.

How to consume the Regional GTFS Realtime Feed

The Regional GTFS Realtime Feed is now available to all developers through the 511 Open Transit Data API. For instructions on how to access the endpoints and to sign up for an API key, see this post to the 511 SF Bay Developer Resources mailing list.

Originally posted to the Interline blog on September 10, 2021.

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