Call-prep brief · checked 2026-10-16
Център за градска мобилност (Sofia Urban Mobility Center)
Grade C · 76.9 / 100
Unchanged since 2026-10-15.
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 down 0.3
Top three things to fix
Set wheelchair_boarding to 1 (accessible) or 2 (not accessible) for every stop. A field survey can start with the busiest stops.
4797 of 4797 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 4,797 stops in the feed.
Effort: A column in stops.txt; your scheduling software likely has it.
Set wheelchair_accessible on every trip. If every vehicle is accessible, this may be one default; otherwise use the value for each trip.
28226 of 28226 trips don't say whether the vehicle is wheelchair accessible. Even with accessible stops, riders need to know the transit vehicle itself can take them.
Fixing this covers all 28,226 trips in the feed.
Effort: A default or per-trip field in your export.
Use mixed case for stop names and headsigns (e.g. 'Main St & 2nd Ave', not 'MAIN ST & 2ND AVE').
Some rider-facing names are in ALL CAPS or all lowercase. ALL-CAPS stop and headsign names are harder to read in apps and are read awkwardly by screen readers.
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: Often a bulk fix in your scheduling software.
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
- 4797 of 4797 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
- 28226 of 28226 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
- Some rider-facing names are in ALL CAPS or all lowercase.
- Next action
- Use mixed case for stop names and headsigns (e.g. 'Main St & 2nd Ave', not 'MAIN ST & 2ND AVE').
- 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://gtfs.sofiatraffic.bg/api/v1/static
- Last checked
- 2026-10-16
- Service window
- 365 days of service data remain. Last service date 2027-10-16.
- Feed version
- 1.0
- Location
- Sofia (stolitsa), Bulgaria
A data-quality and completeness read to support an agency conversation. Not an official compliance determination. Rubric v1.4, validator 8.0.1.