[Proposal] Add NewRoutes to GTFS-RT (#606)

[Arnaud Marquet]

Hello everyone,

Following the discussion in Issue #606, I have opened a Pull Request to formally propose adding NewRoutes to the GTFS Realtime specification.

This change allows for the definition of route metadata (names, colors, branding) directly within a real-time feed, supporting use cases like emergency bus bridges or dynamic on-demand service.

Pull Request:  https://github.com/google/transit/pull/621
Technical Doc: GTFS-NewRoutes Google Doc

I am calling for a vote for Official Adoption. The voting period ends at 23:59:59 UTC on April 23, 2026.

Best regards, 

Arnaud Marquet