General Transit Feed Specification

General Transit Feed Specification (GTFS) documentation is at https://gtfs.org/schedule/reference/.

TriMet schedule data in GTFS format is available for download at http://developer.trimet.org/schedule/gtfs.zip.

Unofficial GTFS data elements found in the TriMet GTFS are documented at http://developer.trimet.org/gtfs_ext.shtml.

GTFS-realtime

GTFS-realtime documentation is at https://gtfs.org/realtime/reference/.

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: http://developer.trimet.org/ws/V1/TripUpdate/

Alerts feed: http://developer.trimet.org/ws/V1/FeedSpecAlerts/

Vehicle Position feed: http://developer.trimet.org/ws/V1/VehiclePositions

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