Transit feed reliability writing
Field guides for GTFS reliability work.
Practical, source-backed notes for teams that need rider-facing transit data to stay usable after basic validation passes.
GTFS Realtime
A practical guide to separating endpoint uptime, protobuf validity, FeedHeader age, entity timestamps, and route coverage before riders see stale arrivals.
- Updated
- June 20, 2026
- Reading time
- 7 minutes
Read the guide
Monitoring
Freshness, coverage, uptime, and rider-facing evidence for Trip Updates, Vehicle Positions, and Service Alerts.
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Audit
A fixed-scope audit path for validation output, feed freshness, coverage gaps, and remediation evidence.
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Comparison
When validators are enough, when observation is needed, and how the workflows complement each other.
Compare workflows