Call-prep brief · checked 2026-10-16
Réseau urbain Ar bus
Grade F · 56.8 / 100
Up 0.4 points since 2026-10-15 (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 no change
- Rider experience no change
- Realtime quality up 1.9
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.
Ask your AVL vendor to send updates at least every 20 seconds. That is the Caltrans guideline.
Realtime data was up to 564 seconds old when sampled. Stale positions and predictions are worse than none: riders watch a bus that already left.
This was measured over a realtime sampling window, so it has no feed-wide share.
Effort: A vendor configuration question.
Set wheelchair_boarding to 1 (accessible) or 2 (not accessible) for every stop. A field survey can start with the busiest stops.
125 of 125 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 125 stops in the feed.
Effort: A column in stops.txt; your scheduling software likely has it.
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
- Realtime data was up to 564 seconds old when sampled.
- Next action
- Ask your AVL vendor to send updates at least every 20 seconds. That is the Caltrans guideline.
- 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
- 125 of 125 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
Key facts
- Feed URL
- https://www.data.gouv.fr/api/1/datasets/r/80fc7c72-e21e-4458-a692-9da58db27566
- Last checked
- 2026-10-16
- Service window
- 260 days of service data remain. Last service date 2027-07-03.
- Location
- Bretagne, 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.