GTFS API Documentation

The GTFS API allows for structured access via GraphQL to the General Transit Feed Specification (GTFS) data for all transit providers included in CarFreeAtoZ.

The GTFS API GraphQL endpoint is located at https://gtfs.conveyal.com/api/manager/graphql.

GTFS API Queries

For basic information on query structure, see the GTFS API documentation.

CarFreeAtoZ Agency IDs

The following agencies are currently tracked for the greater Arlington/DC area, with their corresponding Agency keys in the GTFS API:

Agency	ID
Alexandria DASH	ca031733-07ba-488a-8c01-17e942e92f85
Annapolis Transit	197bcd65-a9ab-4098-adda-01bf080226fc
ART	aa88c227-9c11-4270-95d4-446f579262db
BWI Shuttles	8b3906ac-f4a2-4d50-b68a-ebda703341a8
Fairfax CUE	a074daae-13ae-48b9-aad5-c413c54cb79d
Maryland MTA	b0f53b4b-e4e5-4698-9f25-9779fdb72094
Maryland RTA	b0709258-12fc-49e0-847e-4c260779f7eb
Montgomery Ride-on	04a906df-7a06-44d5-b6b0-5e49dd6ed22e
PRTC	bff5d781-36b4-4a63-8ec9-84d4eac9dd41
VRE	cef60766-571d-4a6b-82e7-7b7b09131d21
WMATA	b9120da3-924f-4cac-a6fb-2c4b27094eee