https://gtfs.org/community/governance/gtfs-realtime-amendment-process/
GTFS Realtime Amendment Process - General Transit Feed Specification
gtfs realtimeamendment processfeed specificationgeneraltransit
https://opendata.vrn.de/datasets/vrn-und-rnn-gtfs-realtime-echtzeitfahrplandaten
VRN und RNN GTFS Realtime Echtzeitfahrplandaten | VRN Open Data
gtfs realtimeopen datavrnundrnn
https://www.interline.io/blog/easily-inspect-gtfs-realtime-using-transitlands-website-or-api/
Easily inspect GTFS Realtime using Transitland's website or API - Interline Technologies
Jul 22, 2025 - Web browsers and text editors can't open GTFS Realtime. But with Transitland, you now can.
gtfs realtime
https://mobilitydatabase.org/
MobilityDatabase | The Global Catalog of GTFS, GTFS-Realtime & GBFS Feeds
Discover open public transit data worldwide. Mobility Database provides GTFS, GTFS-RT, and GBFS feeds to help developers, cities, and agencies build better...
global cataloggtfs realtimegbfsfeeds