Board packet · transit data quality · checked 2026-08-01
Sound Transit, Metro Transit, City of Seattle - King County Metro
Grade B · 85.5 / 100
Unchanged since 2026-07-31.
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-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.
Check the flagged stops' shape_dist_traveled against the route shape, and re-generate it on export if they disagree.
Some stops sit far from the route line, going by the feed's own distance values. Trip planners may draw the route down the wrong path or point riders to the wrong boarding location.
Estimated effort: Usually an export-tool fix, not hand editing.
Check the flagged stops' coordinates and the route shape in your scheduling software; re-snap whichever is misplaced.
Some stops sit far from the route line they belong to. Trip planners may draw the transit vehicle route through the wrong path or point riders to the wrong boarding location.
Estimated effort: A few minutes per flagged stop.
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
- 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 sit far from the route line, going by the feed's own distance values.
- Next action
- Check the flagged stops' shape_dist_traveled against the route shape, and re-generate it on export if they disagree.
- 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 sit far from the route line they belong to.
- Next action
- Check the flagged stops' coordinates and the route shape in your scheduling software; re-snap whichever is misplaced.
- 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-metro-transit-city-of-seattle-king-county-metro/. Rubric v1.3, validator 8.0.1.