Feed status · checked 2026-08-01
Sonoma County Transit (SCT)
Based on the feed this agency publishes
Service mode Bus
down 0.4 since 2026-07-31
Catalogued in California.
A data-quality and completeness lens to help an agency improve its GTFS feed. Not an official compliance determination from any transit program. New to this? How to read your scorecard. Interactive view of this scorecard. Rubric v1.3, validator 8.0.1.
Checked for changes 1 hours ago; last changed 30 days ago.
Measured 3 of 4 score categories from the agency's own feed.
How we measured this
Confidence in this measurement: medium.
- Realtime quality was not measured this run. It does not count against the grade.
- The feed was downloaded from the agency's own URL.
Confidence describes how much the pipeline could measure this run, not the feed itself. It never changes the grade.
Top things to fix
Re-export with a validity window that reaches at least 60 days out.Likely your export tool
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.
⏱ One export setting.worth about +73 points in its category
Set wheelchair_boarding to 1 (accessible) or 2 (not accessible) for every stop. A field survey can start with the busiest stops.Likely your team
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.
⏱ A column in stops.txt; your scheduling software likely has it.worth about +25 points in its category
Set wheelchair_accessible on every trip. If every vehicle is accessible, this may be one default; otherwise use the value for each trip.Likely your export tool
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.
⏱ A default or per-trip field in your export.worth about +15 points in its category
Trillium produces and hosts this feed as a service. These changes are made on their side: send the fix list to your Trillium contact and they apply it and republish.
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
- Service data runs out in 7 day(s).
- Next action
- Re-export with a validity window that reaches at least 60 days out.
- 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
- 1117 of 1117 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
- 499 of 499 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
How to make and check these changes
Check the result on the published feed. Read the guide, make the change in your tool, and use the next comparable run to see whether the finding is still reported. Only an action or ticket record can attribute who made the change.
Re-export with a validity window that reaches at least 60 days out. · Read the fix guide
Make the change. Trillium produces and hosts this feed as a service. These changes are made on their side: send the fix list to your Trillium contact and they apply it and republish.
Check the result. The next scorecard run checks this finding again. If a comparable check no longer reports it, the feed's clearance log records that result. This confirms feed state, not who made the change. Self-check a feed before you publish.
Set wheelchair_boarding to 1 (accessible) or 2 (not accessible) for every stop. A field survey can start with the busiest stops. · Read the fix guide
Make the change. Trillium produces and hosts this feed as a service. These changes are made on their side: send the fix list to your Trillium contact and they apply it and republish.
Check the result. The next scorecard run checks this finding again. If a comparable check no longer reports it, the feed's clearance log records that result. This confirms feed state, not who made the change. Self-check a feed before you publish.
Set wheelchair_accessible on every trip. If every vehicle is accessible, this may be one default; otherwise use the value for each trip. · Read the fix guide
Make the change. Trillium produces and hosts this feed as a service. These changes are made on their side: send the fix list to your Trillium contact and they apply it and republish.
Check the result. The next scorecard run checks this finding again. If a comparable check no longer reports it, the feed's clearance log records that result. This confirms feed state, not who made the change. Self-check a feed before you publish.
Rider view: what this feed publishes
A quick read of rider-facing information in this feed.
- Schedule visibility
- The feed's last published service date is in 7 days.
- Published accessibility data
- Accessibility information is stated for 0% of stops and 0% of trips. This measures published data, not whether stops or vehicles are physically usable.
- Fare information
- Fare information is published using GTFS Fares v1.
- Realtime information
- Realtime-feed availability and live-arrival coverage are not known from this scorecard.
Important: This does not rate service reliability. Riders should confirm current service alerts, fares, and accessibility accommodations with the transit operator before traveling.
Send Trillium a fix request
This feed is produced and hosted by Trillium. Copy this and send it to your Trillium contact; they make the change and republish the feed. Each fix names the validator notice and a guide link.
Send the agency a note
Supporting this agency? Copy this and email it to them. It names what lapsed, why it matters to riders, and the one setting to change.
Score by category
The MobilityData validator flagged 6 kinds of issue across 159 instances (0 error, 115 warning, 44 informational).
Service data runs out in 7 day(s). Publish an updated feed soon or riders will lose trip planning.
0% of stops state wheelchair accessibility (0% marked accessible, 0% marked not accessible). This measures what the feed publishes, not whether a stop is physically usable. Fare data is published.
0% of stops state accessibility (0% marked accessible). Reflects what the feed states, not verified physical usability.
2 accessibility depth signals
5 route badge(s) pair a color and text color below the WCAG 4.5:1 contrast bar (34, 40, 42, 67, 68).
Consider: Adjust route_color or route_text_color so each pair clears 4.5:1. Often switching the text between black and white is enough.
996 stop name(s) use abbreviations or symbols a screen reader may mispronounce, with no spoken form set ("SMART Petaluma Station (D St)", "N McDowell Blvd & Southpoint", "Old Redwood Hwy & St Joseph Way", and more).
Consider: Add tts_stop_name with the spoken form, e.g. 'Main Street and Second Avenue', for the affected stops.
Opportunities to strengthen the data, not deductions from the sub-score above. States what the second accessibility lens can check from the feed, not verified physical usability.
Fares are applied to trips.
Not scored yet. Nothing here counts against the grade.
Routes and stops
Each route is drawn once, using the longest shape its trips follow; stops are the dots.
This feed has 1117 stops.
The route and stop data is ready below. Load the map only when you want the geographic view. It uses additional data.
Basemap: OpenFreeMap, © OpenStreetMap contributors. Routes and stops: this agency's GTFS feed.
- 20 (gray)
- 26 (red)
- 30 (green)
- 40 (orange)
- 42 (pink)
- 44 (brown)
- 48 (teal)
- 60 (purple)
- 62 (black)
- 10 (gray)
- 12 (blue)
- 14 (red)
- 24 (red)
- 28 (purple)
- 32 (purple)
- 66 (yellow)
- 20X (gray)
- 34 (red)
- 30X (green)
- 48X (teal)
- 60X (purple)
- 67 (green)
- 68 (teal)
- 66X (green)
| Route | Type | Line color |
|---|---|---|
| 20 Russian River Area, Forestville, Sebastopol, Santa Rosa | Bus | gray |
| 26 Sebastopol, Cotati, Rohnert Park | Bus | red |
| 30 Santa Rosa, Sonoma Valley | Bus | green |
| 40 Sonoma, Petaluma | Bus | orange |
| 42 Santa Rosa, Industry West Business Park | Bus | pink |
| 44 Petaluma, JC, SSU, Santa Rosa | Bus | brown |
| 48 Santa Rosa, Rohnert Park, Cotati, Petaluma | Bus | teal |
| 60 Cloverdale, Healdsburg, Windsor, Santa Rosa | Bus | purple |
| 62 Santa Rosa, County Airport | Bus | black |
| 10 Cotati, Rohnert Park, Sonoma State University | Bus | gray |
| 12 Northern Rohnert Park | Bus | blue |
| 14 Northern Rohnert Park | Bus | red |
| 24 Sebastopol Shuttle | Bus | red |
| 28 Guerneville, Monte Rio | Bus | purple |
| 32 Sonoma Valley | Bus | purple |
| 66 Windsor Shuttle | Bus | yellow |
| 10T Cotati, Rohnert Park Tripper | Bus | gray (no shape in feed) |
| 12T Northern Rohnert Park Tripper | Bus | blue (no shape in feed) |
| 20X Russian River Area, Santa Rosa | Bus | gray |
| 34 Santa Rosa, Sonoma | Bus | red |
| 30X Santa Rosa, Sonoma Valley | Bus | green |
| 48X Santa Rosa, Rohnert Park, Cotati, Petaluma | Bus | teal |
| 60X Cloverdale, Healdsburg, Windsor, Santa Rosa | Bus | purple |
| 67 Healdsburg Shuttle | Bus | green |
| 68 Cloverdale Shuttle | Bus | teal |
| 51 Novato, Petaluma, Rohnert Park, Santa Rosa | Bus | gray (no shape in feed) |
| 66X Windsor Town Green Shuttle | Bus | green |
List every stop
- SMART Petaluma Station (D St)
- Rohnert Park SMART Station
- Rohnert Park SMART Station
- N McDowell Blvd & Southpoint
- Old Redwood Hwy & St Joseph Way
- Camino Colegio & Manchester (Ac Credo HS)
- Camino Colegio & Wellness Way
- Robert's Lake Rd / Golf Course Dr
- Harmon St & Healdsburg Depot
- Foothill Blvd & Del Web Dr
- Foothill Dr & Elbridge Ave
- Treadway Blvd & Cloverdale Blvd
- Geyserville Ave & Barilani Rd
- Geyserville Ave & Barilani Rd
- Redwood Dr & Golf Course Dr (Graton Resort)
- Santaro Way & E Cotati Ave (Cotati Depot)
- Country Club Dr & Golf Course Dr
- Camino Colegio & Middlebrook Way
- Camino Colegio & Magnolia Ave
- Montgomery Dr & Second St
- Montgomery Dr & Second St
- McKinley Street & Morris Street
- McKinley Street & Brown Street
- Fairfield Inn - Main Entrance
- Burbank Heights - Experimental Farm
- Skylane Blvd & Airport Blvd
- Skylane Blvd & Aviation Blvd
- Skylane Blvd & Shiloh Rd
- Shiloh Rd & Skylane Blvd
- Windsor Rd & Vintage Greens Dr
- Windsor Rd & Cork St
- Windsor Rd & Patrick Ln
- Shiloh Rd & Skylane Blvd
- Skylane Blvd & Shiloh Rd
- Skylane Blvd & Aviation Blvd
- Skylane Blvd & Airport Blvd
- Sonoma Co. Airport Terminal - NB
- Guerneville Library
- Russian River Senior Center
- East Third St & North Main St
- Duncans Mills/Moscow Rd (Westbound)
- Hwy 116 & Church St (Monte Rio)
- Keating Ave & Pitt Ave
- Sonoma Mtn Pkwy & Wellington Place
- Lakeville St & Jefferson St
- Redwood Circle & Green Music Center
- Rohnert Park Expressway & Knight Road
- Rohnert Park Expressway & Redwood Circle
- Labath Ave & RP Expressway
- Kings Valley
- Hembree Ln & Victory Ln
- Occidental (Health Center)
- Armstrong Woods Rd & Laughlin Rd
- Steele Ln & Rowe Dr
- Steele Ln & Meyers Dr
- Steele Ln & Berkeley Dr
- Steele Ln & Salem Ave
- Airport Blvd & Regional Parkway
- Arlen Dr & Santa Alicia Dr
- Adrian Dr & Arlen Dr
- Adrian Dr & Adrian Ct
- Bodway Parkway @ Camino Colegio
- Oak Park St @ Windsor River Rd
- Valley House Drive & Bodway Parkway
- Merner Dr. & Old Redwood Hwy
- Healdsburg Ave & Passalacqua Rd
- Healdsburg Ave & Passalacqua Rd
- Kerry Road & Kingwood Road
- Kerry Road & Keats Place
- Kerry Road & Keiser Avenue
- Rohnert Park Expressway & Karrington Road
- Rohnert Park Expressway & Snyder Lane
- Hwy 116 & Beech Ave
- Hwy 116 & Duncan Rd
- Hwy 116 & Laurel Dell Ave
- Hwy 116 & Cazadero Hwy
- Blair St & Alter St
- S Cloverdale Blvd & Industrial Dr
- RP Expressway & Hwy 101 (2)
- Chase Bank (2)
- Healdsburg Ave & N Main St (Safeway) (2)
- North Main St & Wilton Ave (2)
- Moscow Rd & Casini Ranch
- West St & Moscow Rd (2)
- Monte Rio (Creekside Park) (2)
- CVS (Piper St) (2)
- Cloverdale Blvd & Fourth St (2)
- North Main St & Wilton Ave (2)
- Villa Grande (2)
- Novato Hub (Redwood & Grant)
- Coddingtown (Drop-off only)
- Novato Hub (Redwood & Grant)
- Geyserville Ave & 22000 Geyserville Ave
- Geyserville Ave & Ac. from 22000 Geyserville Ave
- Windsor High School
- Windsor Middle School
- Geyserville Ave at Hwy 101 Underpass
- Geyserville Ave at Hwy 101 Underpass
- Santa Rosa Transit Mall
- B St & Ross St
- Mendocino Ave & Cherry St
- Mendocino Ave & College Ave
- Mendocino Ave & Ridgeway
- Ac Santa Rosa Junior College
- Mendocino Ave & Dexter St
- Mendocino Ave & Silva Ave
- Mendocino Ave & Steele Ln
- Administration Dr & Paulin
- Administration Dr & Ventura
- County Admin Center (Ventura Ave)
- Russell & Ventura (Kaiser Stop)
- Kaiser Stop / Bicentennial Ave
- Range Ave & Russel Ave
- Range Ave & State Farm Dr
- Range Ave & Paulin Creek
- Range Ave & Steele Ln
- Mendocino Ave & Chanate Rd
- Mendocino Ave & Bicentennial Way
- Mendocino Ave & Fountain Grove Pkwy
- Old Redwood Hwy &
- Old Redwood Hwy (Kaiser Stein Bldg)
- Old Redwood Hwy & Cardinal Newman HS
- Old Redwood Hwy & La Mancha Apartments
- Old Redwood Hwy & Chelsea Drive
- Mark West Springs Rd & Old Redwood Hwy
- River Rd & West of Hwy 101
- Fulton Rd & River Rd
- Fulton Rd & Airport Blvd
- River Rd & Fulton Rd
- River Rd & Laughlin Rd
- River Rd & Trenton-Healdsburg Rd
- Old Redwood Hwy & Mark West Springs Rd
- Larkfield Shopping Center
- Old Redwood Hwy & Ascot Dr
- Old Redwood Hwy & Deerwood Dr
- Old Redwood Hwy & Faught Rd
- Old Redwood Hwy & Airport Blvd
- Old Redwood Hwy & Fulton Rd
- Old Redwood Hwy & Plymouth Way
- Old Redwood Hwy & Shiloh Rd
- Shiloh Rd & Old Redwood Hwy
- Shiloh Center & Wal-Mart (Hembree)
- Hembree Ln & Wilson Ln
- Hembree Ln & Cornell St
- Hembree Ln & Broad Oak Way
- Old Redwood Hwy & Shiloh Rd
- Old Redwood Hwy & Savannah Way
- Old Redwood Hwy & Shamrock Circle
- Old Redwood Hwy & Thrushwing
- Old Redwood Hwy & Pleasant Ave
- Old Redwood Hwy & Hembree Ln
- Old Redwood Hwy & Alden Ln
- Old Redwood Hwy & Lakewood Dr
- Windsor River Rd & Old Redwood Hwy
- Windsor River Rd (Windsor Depot)
- Windsor River Rd & Starr Rd
- Starr Rd & Buckingham Dr
- Starr Rd & Stellar Ln
- Starr Rd & Colleen Dr
- Starr Rd & Gumview Rd
- Starr Rd & Twin Oaks Ln
- Old Redwood Hwy & Starr Rd
- Old Redwood Hwy &
- Old Redwood Hwy & Eastside Rd
- Old Redwood Hwy & Eastside Rd
- Old Redwood Hwy & Btwn Eastside/Limerick
- Old Redwood Hwy & Limerick Ln
- Healdsburg Ave & Exchange Way
- Healdsburg Ave & Mill St
- Healdsburg Plaza
- Healdsburg Ave & Powell Ave
- Healdsburg Ave & Dry Creek Rd
- Dry Creek Rd & Healdsburg Ave
- Grove St & Chaquita Rd
- Healdsburg Ave & Terrace
- Healdsburg Ave & Foss Creek (driveway)
- Healdsburg Ave & Parkland Farms Dr
- Healdsburg Ave & Alexander Valley Rd
- Healdsburg Ave & Lytton Springs Rd
- Geyserville Ave & Independence Ln
- Geyserville Ave & Tzabaco Creek Rd
- Geyserville Ave & Walden St
- Geyserville Ave (Geyserville Park & Ride)
- Geyserville Ave & Geysers Ridge Rd
- Geyserville Ave & Canyon Rd
- Geyserville Rd & East of Hwy 101
- Geyserville Rd & Zanzi Ln
- Asti Rd & Washington School Rd
- Asti
- Asti Rd & Theresa Dr
- Theresa Dr
- Cloverdale Blvd & Sandholm Dr
- Cloverdale Blvd & Treadway Dr
- Cloverdale Blvd & Brookside Dr
- Cloverdale Blvd & Tarman Dr
- Cloverdale Blvd & South St
- Asti Rd & Cloverdale Depot
- Cloverdale City Hall & Plaza
- Kings Valley - Clubhouse
- Cloverdale Blvd & Healdsburg Ave
- Cloverdale Blvd & Franklin St
- Cloverdale Blvd & Brookside Dr
- Cloverdale Blvd & Treadway
- Cloverdale Blvd & Sandholm Dr
- Dutcher Creek Rd & Hiatt Rd
- Theresa Dr & Hwy 101
- Asti Rd & Theresa Dr
- Asti
- Asti Rd & Washington School Rd
- Geyserville Ave & Zanzi Ln
- Geyserville Ave & East of Hwy 101
- Geyserville Ave & Canyon Rd
- Geyserville Ave & Geysers Ridge Rd
- Geyserville Ave & School House Ln
- Geyserville Ave (Ac Geyserville Park & Ride)
- Geyserville Ave & Walden St
- Geyserville Ave &
- Geyserville Ave & Independence Ln
- Healdsburg Ave & Lytton Springs Rd
- Healdsburg Ave & Alexander Vly Rd
- Healdsburg Ave & Parkland Farms Dr
- Healdsburg Ave & Grove St
- Healdsburg Ave & Sunnyvale Dr
- Healdsburg Ave & Dry Creek Rd
- Healdsburg Ave & Sherman St
- Healdsburg Ave & Matheson
- Healdsburg Ave & Mill St
- Old Redwood Hwy & Limerick Ln
- Old Redwood Hwy & Btwn Eastside/Limerick
- Old Redwood Hwy & Eastside Rd
- Old Redwood Hwy & Eastside Rd
- Old Redwood Hwy & West of Hwy 101
- Old Redwood Hwy & Starr Rd
- Starr Rd & Entrada
- Starr Rd & Gumview Rd
- Starr Rd & Coleen Dr
- Starr Rd & Buckingham Dr
- Windsor River Rd & Spencer St
- Windsor River Rd (Windsor Depot)
- Windsor Rd & Windsor Depot
- Windsor River Rd & Old Red Hwy
- Old Redwood Hwy & Lakewood Dr
- Old Redwood Hwy & Alden Ln
- Old Redwood Hwy & Hembree Ln
- Old Redwood Hwy & Pleasant Ave
- Old Redwood Hwy & Shira St
- Old Redwood Hwy & Shira St
- Old Redwood Hwy & Billington Ln
- Old Redwood Hwy & Deanna Pl
- Old Redwood Hwy & Anna Dr
- and 867 more (see the full list on the map or in the GeoJSON)
Over time
Overall score across the last 4 checks — down 0.4 since 2026-07-31.
Show the numbers
| Check | Score | Change |
|---|---|---|
| 2026-07-25 | 58.9 | first check |
| 2026-07-30 | 56.8 | down 2.1 |
| 2026-07-31 | 56.4 | down 0.4 |
| 2026-08-01 | 56.0 | down 0.4 |
What changed since your last check
- Correctness no change
- Freshness down 1.6
- Rider experience no change
What changed in this feed
Overall score fell 0.4 points since 2026-07-31.
Same feed file as 2026-07-31; the published zip did not change.
Subscribe to this feed’s changes (Atom) to hear about grade drops in a reader, with no sign-up.
Everything we checked
11 findings, ordered by severity.
Show every finding
- Warning1117 instances
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.
Fix: Set wheelchair_boarding to 1 (accessible) or 2 (not accessible) for every stop. A field survey can start with the busiest stops. (A column in stops.txt; your scheduling software likely has it.)
Finding code: scorecard_wheelchair_boarding_unknown · Read the fix guide · See GTFS Schedule reference (opens the GTFS Schedule reference on an external site)
- Warning499 instances
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.
Fix: Set wheelchair_accessible on every trip. If every vehicle is accessible, this may be one default; otherwise use the value for each trip. (A default or per-trip field in your export.)
Finding code: scorecard_wheelchair_accessible_unknown · Read the fix guide · See GTFS Schedule reference (opens the GTFS Schedule reference on an external site)
- Warning101 instances
Some stops exist in the feed but no trip ever stops at them.
Riders may walk to a stop where no bus is scheduled to arrive.
Fix: Remove retired stops from the export, or add them back to the trips that should serve them. (A review pass in your scheduling software.)
Finding code: stop_without_stop_time · Read the fix guide · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
- Warning70 instances
70 of 499 trips lack rider-facing destination or direction text.
When a route has multiple directions or patterns, the route name alone may not tell riders which service is coming.
Fix: Add the destination, direction, or 'via' label riders actually see to trip_headsign. Do not copy the route name. If the label changes during the trip, use stop_headsign. (Usually one value per route pattern in your scheduling source.)
Finding code: scorecard_missing_headsigns · Read the fix guide · See GTFS Best Practices (opens GTFS Best Practices on an external site)
- Warning13 instances
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 streets or point riders to the wrong corner.
Fix: Check the flagged stops' shape_dist_traveled against the route shape, and re-generate it on export if they disagree. (Usually an export-tool fix, not hand editing.)
Finding code: stop_too_far_from_shape_using_user_distance · Read the fix guide · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
- Warning1 instance
This feed's service calendar runs out within the next 30 days.
If a new feed isn't published before it ends, trip planners will drop your agency and riders will see no service.
Fix: Schedule a feed re-export now so the new calendar is live well before the current one ends. (Usually a re-export from your scheduling software.)
Finding code: feed_expiration_date30_days · Read the fix guide · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
- Warning1 instance
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.
Fix: Re-export with a validity window that reaches at least 60 days out. (One export setting.)
Finding code: scorecard_feed_expiring_soon · Read the fix guide · See GTFS Best Practices (opens GTFS Best Practices on an external site)
- Warning1 instance
This feed describes flexible (demand-responsive) service but has no booking_rules.txt.
Riders can see the service area but not how or when to reserve a trip, so they can't actually use the service.
Fix: Add booking_rules.txt saying how far ahead and how to book (phone, app, or web). (A small file; one rule often covers the whole service.)
Finding code: scorecard_flex_no_booking_rules · Read the fix guide · See GTFS Schedule reference (opens the GTFS Schedule reference on an external site)
- Info34 instances
Some files contain columns that are not part of the GTFS spec.
Harmless to riders, but apps ignore these columns and they can hide typos in real column names.
Fix: Check the flagged column names for misspellings of standard GTFS fields; remove them if they are vendor extras. (A quick look at the flagged files.)
Finding code: unknown_column · Read the fix guide · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
- Info8 instances
The feed includes a file that is not part of the GTFS spec.
Apps ignore files they don't know, and a stray file can hide a misspelled standard file name.
Fix: Check the flagged file name for a typo of a standard GTFS file. Remove it if it is a vendor extra. (A quick look at the flagged file.)
Finding code: unknown_file · Read the fix guide · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
- Info2 instances
Some service dates fall outside the date window set in feed_info.txt.
feed_info.txt should span every day your service runs, so apps know when the data applies.
Fix: Widen feed_start_date and feed_end_date to cover all service dates, or fix the dates that fall outside. (Two fields in feed_info.txt, or one export setting.)
Finding code: service_window_outside_feed_period · Read the fix guide · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
Beyond the grade
Opportunities that do not change your grade today: fare detail, on-demand service, and deeper accessibility data.
Flex zones are published but no booking_rules.txt is present.
Consider: Add booking_rules.txt with how far ahead and how to reserve (phone, app, or web).
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 your 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.
- shapes.txt covers your trips Ready
- All 499 trips have a shape in shapes.txt.
In plain words: if you report to the federal transit database, you have to publish a working, up-to-date feed, provide a stable agency_id for each represented reporter, and confirm the feed and P-50 crosswalk each year. This box is a heads-up; your filings are the official check.
A readiness signal mapping this feed to the FTA National Transit Database GTFS requirement (Report Year 2023 onward: a public, valid, current feed, certified annually on the D-10). For RY2026, each represented reporter needs a stable agency_id, unique within the feed and crosswalked to its five-digit NTD ID on P-50; the values do not need to be equal. FTA also requires shapes.txt in the published GTFS: Full Reporters from Report Year 2025, and Reduced, Rural, and Tribal Reporters from Report Year 2026. Not an official determination; your certification is the official check.
Conformance mark Not yet
This feed is close to the conformance mark. Service data runs out in 7 days; renew to qualify. States wheelchair access on 0% of stops and 0% of trips; the mark needs 90% of each.
- Valid Met
- Passes validation with no errors.
- Current Not yet
- Service data runs out in 7 days; renew to qualify.
- Accessible Not yet
- States wheelchair access on 0% of stops and 0% of trips; the mark needs 90% of each.
In plain words: earn this mark when your feed passes validation, has not expired, and says whether nearly every stop and trip is wheelchair accessible.
A pass credential for a feed that is valid, current, and states wheelchair access on nearly every stop and trip. Accessibility here measures what the feed publishes, not whether a stop is physically usable. How the conformance mark works.
Can riders use it?
Checks beyond structural validation: places where the feed is valid but a rider still could not travel.
- 101 of 1117 boardable stops are never served by any trip. Riders see these stops in apps and on the map but can never catch anything there, which erodes trust in the data. Remove stops no route serves, or add the trips that should call at them.
These do not change the grade. They catch trips with no rideable leg and stops no trip serves, the kind of gap a trip planner trips over.
At risk for the Google and Apple Maps four-week coverage bar. This feed has 7 days of service left. Maps needs at least four weeks (28 days) of upcoming service, so your agency will fall out of trip planners soon. Re-export with a longer calendar.
How this agency maps to the standards
The scorecard is a data-quality lens, not a compliance determination. Its universal references describe good GTFS and useful rider information. Useful references here are GTFS Schedule Best Practices, GTFS-Realtime Best Practices, MobilityData grading scheme, Google Transit publication guidance, FTA National Transit Database GTFS requirement. Read the full standards crosswalk.
In California, the published guideline is California Transit Data Guidelines. Caltrans' published quality guidelines and compliance checklist; this rubric is anchored to them.
California Minimum GTFS Guidelines checklist (5 of 6 measured items met)
The state's own Data Process Checklist, matched item by item to what this scorecard already measures. An item marked "not measured here" is real ground the checklist covers that this tool does not check; see the official checklist for the full picture.
- Meets Publish GTFS Schedule at a stable, automatically-fetchable URL
The published feed URL downloaded at the last check.
- Not measured here Implement required fields: Fares v2, text-to-speech stop names, shapes.txt, wheelchair_boarding, and Pathways where applicable
This scorecard measures wheelchair_boarding, shapes.txt coverage, fare data, and station pathways separately, below; it does not check the Fares v2 format specifically or text-to-speech stop names.
- Not measured here Achieve a passing score in every category of the MobilityData GTFS Grading Scheme v1
This scorecard automates a proxy for the Grading Scheme's rider-facing fields (see the standards crosswalk) rather than running the scheme itself, which grades by comparison to the real world by hand.
- Not measured here Publish changes to the base schedule at least one week ahead of every service change
This scorecard does not track a feed's publish history, so advance notice cannot be checked.
- Meets Produce no critical errors in the MobilityData GTFS Validator
Passes validation with no errors.
- Not measured here Publish Trip Updates, Vehicle Positions, and Alerts feeds
This scorecard checks realtime reachability and freshness overall; it does not check for all three feed types individually.
- Not measured here Update Trip Updates and Vehicle Positions at least every 20 seconds
This scorecard samples realtime freshness; it does not check this specific 20-second cadence.
- Not measured here Publish information for at least 99% of vehicles in service
This scorecard measures the share of scheduled trips represented in TripUpdates, a related but different figure than vehicle coverage.
- Not measured here Keep 100% of trip_ids consistent between Schedule and Realtime
This scorecard does not currently check trip_id consistency between the Schedule and Realtime feeds.
- Not measured here Produce no critical errors in the Center for Urban Transportation Research realtime validator
This scorecard does not run the CUTR realtime validator.
- Not measured here Publish accessible feed links on the agency or regional partner website
This scorecard does not check the agency's own website.
- Not measured here Register GTFS and GTFS-Realtime feeds with transit.land and the Mobility Database
This scorecard does not currently check aggregator registration for this section.
- Meets Designate a technical contact in feed_info.txt's feed_contact_email
feed_info.txt states a technical contact.
- Gap wheelchair_boarding stated on stops and trips
States wheelchair access on 0% of stops and 0% of trips.
- Meets shapes.txt with a shape for every trip
All 499 trips have a shape in shapes.txt.
- Meets Fare data published, or the service marked fare-free
Fare data is published.
- Correctness 80 / 100
- GTFS Schedule best practices, checked by the MobilityData validator. MobilityData grading covers stop locations, route names, and colors. Google Transit requires a feed to pass validation for publication. FTA NTD readiness also checks that the published feed is valid.
- Freshness 12 / 100
- GTFS Schedule best practices call for a dataset that stays current. An expired calendar can remove service from Google Transit and other rider trip planners. FTA NTD readiness also checks that the published feed is current.
- Rider experience 58 / 100
- GTFS Best Practices for rider-facing fields. MobilityData grading covers stop names and headsigns.
- Realtime quality Not yet published
- GTFS-Realtime best practices: a stable URL, high uptime, and frequent updates.
Cite this record
This page updates on every check. The record below does not: it is the dated file this grade came from, published at https://gtfsscorecard.org/data/artifacts/sonoma-county-transit-sct/2026-08-01.json and never overwritten, pinning the grade, category scores, rubric version, validator version, reader archive profile, and the scored feed's sha256 as they stood on 2026-08-01. Use it in a board packet, a regulatory filing, or a research citation instead of linking the live page, whose content will differ on your next visit.
Citing the tool itself rather than one agency's record? Use the repo's CITATION.cff.