National transit feeds registered for the next graph

The transit routing registry now includes every active Canadian GTFS feed the Mobility Database lists. Static /transit/* stays the eight-pilot release.

• 135 active feeds and 3 watch feeds, after a 614 MB national Valhalla measurement
• Licence rows record Mobility Database terms, not a per-agency legal review
• A failed download or a quarantined feed no longer stops prepare-routing

AvailabilityNot on the graph that is serving. /transit/* is still the eight-pilot static release, and only TTC is routing-ready.