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General Transit Feed Specification

General Transit Feed Specification (GTFS) documentation is at

TriMet schedule data in GTFS format is available for download at

Unofficial GTFS data elements found in the TriMet GTFS are documented at


GTFS-realtime documentation is at

TriMet GTFS-realtime Feeds

An application id (AppID) is a required parameter to all TriMet web service calls. Please see the Web Services Documentation for more information.

TripUpdate feed:

Alerts feed:

BETA: Vehicle Position feed:

Vehicle Positions feed supports the same request parameters as the Vehicle Location Service.