Board packet · transit data quality · checked 2026-09-13
Marin Transit
Grade A · 92.2 / 100
Up 28.9 points since 2026-09-12 (D to A).
What this grade measures
The quality of the schedule data in the feed scored here for trip-planning apps: whether riders using Google Maps, Apple Maps, or Transit see current, correct, and complete information. It measures the data feed, not service quality or operations.
Progress this period
No newly cleared items this period. The score and trend above reflect where the feed stands today.
What needs attention next
Three improvements, in priority order, each sized so the board can see what it is approving:
Add the required column named in the finding to the flagged file.
A file is missing a column that GTFS requires. Apps may reject the whole file, so riders could lose the affected routes or stops.
Estimated effort: Often an export setting; ask your vendor if it recurs.
Set wheelchair_accessible on every trip. If every vehicle is accessible, this may be one default; otherwise use the value for each trip.
535 of 1613 trips don't say whether the vehicle is wheelchair accessible. Even with accessible stops, riders need to know the bus itself can take them.
Estimated effort: A default or per-trip field in your export.
Check the flagged file name for a typo of a standard GTFS file. Remove it if it is a vendor extra.
The feed includes a file that is not part of the GTFS spec. Apps ignore files they don't know, and a stray file can hide a misspelled standard file name.
Estimated effort: A quick look at the flagged file.
Finding handoff
Move one finding to a recheck
Select one finding. Copy the request, make the change in the feed-producing tool, then compare the next complete run.
- Feed evidence
- A file is missing a column that GTFS requires.
- Next action
- Add the required column named in the finding to the flagged file.
- Recheck
- Publish the changed feed at the same URL. On the next complete, comparable scorecard run, confirm that this finding is no longer reported.
Copy handoff text
- Feed evidence
- 535 of 1613 trips don't say whether the vehicle is wheelchair accessible.
- Next action
- Set wheelchair_accessible on every trip. If every vehicle is accessible, this may be one default; otherwise use the value for each trip.
- Recheck
- Publish the changed feed at the same URL. On the next complete, comparable scorecard run, confirm that this finding is no longer reported.
Copy handoff text
- Feed evidence
- The feed includes a file that is not part of the GTFS spec.
- Next action
- Check the flagged file name for a typo of a standard GTFS file. Remove it if it is a vendor extra.
- Recheck
- Publish the changed feed at the same URL. On the next complete, comparable scorecard run, confirm that this finding is no longer reported.
Copy handoff text
Produced by the GTFS Scorecard, an open-source data quality tool. A data-quality read to support the board conversation, not an official compliance determination. Live scorecard: https://gtfsscorecard.org/agency/marin-transit/. Rubric v1.3, validator 8.0.1.