Board packet · transit data quality · checked 2026-08-01
Sound Transit
Grade C · 74.3 / 100
Down 0.4 points since 2026-07-31 (C to C).
What this grade measures
The quality of the schedule data this agency publishes 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:
Re-export with a validity window that reaches at least 60 days out.
Service data runs out in 27 day(s). When the calendar runs out, trip planners stop showing this agency. Fixing it now is calmer than after riders notice.
Estimated effort: One export setting.
Re-generate shape_dist_traveled on export so stop and shape distances use the same units.
On some trips the stop distances run a little past the end of the route line. The stop and shape distance values don't quite line up, so any math that uses them can drift.
Estimated effort: Usually an export-tool fix, not hand editing.
Remove retired stops from the export, or add them back to the trips that should serve them.
Some stops exist in the feed but no trip ever stops at them. Riders may walk to a stop where no transit vehicle is scheduled to arrive.
Estimated effort: A review pass in your scheduling software.
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
- Service data runs out in 27 day(s).
- Next action
- Re-export with a validity window that reaches at least 60 days out.
- 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
- On some trips the stop distances run a little past the end of the route line.
- Next action
- Re-generate shape_dist_traveled on export so stop and shape distances use the same units.
- 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
- Some stops exist in the feed but no trip ever stops at them.
- Next action
- Remove retired stops from the export, or add them back to the trips that should serve them.
- 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/sound-transit/. Rubric v1.3, validator 8.0.1.