Sonoma County Transit (SCT)

What changed since the last check

• Correctness no change
• Freshness down 1.6
• Rider experience no change

Top three things to fix

1. Re-export with a validity window that reaches at least 60 days out.

   Service data runs out in 7 day(s). When the calendar runs out, trip planners stop showing this agency. Fixing it now is calmer than after riders notice.

   Effort: One export setting.

2. Set wheelchair_boarding to 1 (accessible) or 2 (not accessible) for every stop. A field survey can start with the busiest stops.

   1117 of 1117 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.

   Effort: A column in stops.txt; your scheduling software likely has it.

3. Set wheelchair_accessible on every trip. If every vehicle is accessible, this may be one default; otherwise use the value for each trip.

   499 of 499 trips don't say whether the vehicle is wheelchair accessible. Even with accessible stops, riders need to know the bus itself can take them.

   Effort: A default or per-trip field in your export.

Ready to send to the agency

Hi Sonoma County Transit (SCT) team, Service data runs out in 7 day(s). When the calendar runs out, trip planners stop showing this agency. Fixing it now is calmer than after riders notice. The fix is usually one export setting: Re-export with a validity window that reaches at least 60 days out. Your feed is produced by Trillium, so the quickest path is usually forwarding this to your Trillium contact. This came from your GTFS data quality scorecard, which checks the feed you publish and lists the fixes in plain language: https://gtfsscorecard.org/agency/sonoma-county-transit-sct/

Copy this note from the full scorecard.

NTD GTFS readiness: Needs attention

This feed is close to NTD-ready. Service data runs out in 7 days; renew before you certify.

Published Ready

Published at a public URL.

Valid Ready

Passes validation with no errors.

Current Needs attention

Service data runs out in 7 days; renew before you certify.

agency_id provided Ready

agency.txt provides agency_id. For RY2026, keep one stable value for each NTD reporter represented in the feed and crosswalk each value on the P-50 form.

agency_id equals NTD ID (optional): Different (allowed). Your feed's agency_id is 175; your National Transit Database ID is 90089. A feed that serves several agencies (a shared regional feed) can legitimately carry more than one agency_id. The values do not need to equal the five-digit NTD ID, so this difference is allowed and carries no score. Confirm that P-50 crosswalks agency_id 175 to NTD ID 90089, and keep the feed value stable. Do not change it solely to make the two values equal.

The bar this score answers to

The published guideline in California is California Transit Data Guidelines. Caltrans' published quality guidelines and compliance checklist; this rubric is anchored to them.

Key facts

Feed URL

https://data.trilliumtransit.com/gtfs/sonomacounty-ca-us/sonomacounty-ca-us.zip

Last checked

2026-08-01

Service window

7 days of service data remain. Last service date 2026-08-08.

Feed version

UTC: 01-Jul-2026 17:39

Location

California