Call-prep brief · checked 2026-10-15
TRACE (Colmar)
Grade F · 41.1 / 100
Down 0.5 points since 2026-10-14 (F to F).
For this call: lead with the grade and the three fixes below, then confirm the feed is current and the rider information is complete. Each fix is framed as a next step, not a failure.
What changed since the last check
- Correctness no change
- Freshness down 1.6
- Rider experience no change
Top three things to fix
Re-generate shape distances in your export; flag to your vendor if it persists.
Some trips have stop times whose distances along the route go backwards. Apps can show buses jumping backwards or mis-order stops.
This is a validator notice, and the validator decides what each instance covers, so no share of the network can be read from it here.
Effort: Usually an export-tool fix, not hand editing.
Set wheelchair_boarding to 1 (accessible) or 2 (not accessible) for every stop. A field survey can start with the busiest stops.
467 of 467 stops don't say whether a wheelchair user can board there. Riders who use wheelchairs can't plan a trip when accessibility is marked 'unknown'; apps show no information at all.
Fixing this covers all 467 stops in the feed.
Effort: A column in stops.txt; your scheduling software likely has it.
Add fare_attributes.txt (or Fares v2 files) with your fare structure. If your service is fare-free, ask to have it marked fare-free instead.
The feed contains no fare information. Riders see 'fare unknown' in trip planners and can't budget their trip; visitors are most affected.
This one is about the feed as a whole, so there is no share of it to count.
Effort: A small file for most flat-fare systems.
Riders and need behind these fixes
- Rider-trip figures come from the United States National Transit Database, which does not cover this feed's country.
- The served-area need overlays cover the United States and Canada, so none of them applies to this feed.
These describe this feed only. They do not rank agencies, and they do not change the grade or the order of the fixes.
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
- Some trips have stop times whose distances along the route go backwards.
- Next action
- Re-generate shape distances in your export; flag to your vendor if it persists.
- 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
- 467 of 467 stops don't say whether a wheelchair user can board there.
- Next action
- Set wheelchair_boarding to 1 (accessible) or 2 (not accessible) for every stop. A field survey can start with the busiest stops.
- 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 contains no fare information.
- Next action
- Add fare_attributes.txt (or Fares v2 files) with your fare structure. If your service is fare-free, ask to have it marked fare-free instead.
- 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
Key facts
- Feed URL
- https://transport.data.gouv.fr/resources/80479/download
- Last checked
- 2026-10-15
- Service window
- 31 days of service data remain. Last service date 2026-11-15.
- Feed version
- 20260910
- Location
- Grand-Est, France
Part of the France portfolio: see where this agency sits among the other feeds in that group before the call.
A data-quality and completeness read to support an agency conversation. Not an official compliance determination. Rubric v1.4, validator 8.0.1.