Developer Resources

RTA Maryland supports open transit data initiatives and makes resources available to developers and applications. We utilize the General Transit Feed Specification (GTFS) to convey our schedule, geographic, real-time, and other related datasets in a standardized format. To learn more about the spec and best practices we follow, visit

RTA does not guarantee the accuracy of this data nor does it warrant or endorse any application that uses this data. RTA may update, modify, or revise this data at any time, without notice.

To download our latest GTFS feed, click here. (Static schedule data may be updated multiple times a week, so check back for the latest upload.)

Our GTFS-RT feeds (Trip Updates, Vehicle Positions, and Alerts) are offered through the Swiftly API and update approximately every 15 seconds. For full production-level access to these feeds, please request an API key here.

Alternatively, “preview” versions of these feeds (updated less frequently) can be found on our OpenMobilityData profile here.