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Feed status · checked 2026-07-09

Alameda-Contra Costa Transit District (AC Transit)

Based on the feed this agency publishes

FDCBA

52.2 / 100

unchanged since 2026-07-08

Ahead of 40% of all tracked agencies and 53% of large agencies. Operates in California.

Feed expiredAccessibility gapsNo realtime feed

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 v1.1, validator 8.0.1.

Checked for changes 10 hours ago; last fetch returned HTTP 403.

Measured 3 of 4 score categories from the Mobility Database's mirror copy of the feed.

How we measured this

Confidence in this measurement: provisional.

Realtime quality was not measured this run. It does not count against the grade.
The agency's own feed URL was unreachable, so the Mobility Database's hosted mirror copy was scored instead.

Confidence describes how much the pipeline could measure this run, not the feed itself. It never changes the grade.

Top things to fix

Fix 01

Re-export the feed with a calendar that reaches further out, and set feed_info feed_end_date past your next service change.Likely your export tool

Service data ended 859 day(s) ago. When the calendar runs out, trip planners stop showing this agency even though the buses are still running. Riders are told the service does not exist.

⏱ Usually one export setting; export on a schedule so it never lapses again.worth about +100 points

Agencies here usually clear this within about 1 week (based on 18 observed fixes).

Fix 02

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

4754 of 4754 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

Fix 03

Set wheelchair_accessible on every trip (most small-agency fleets are 100% accessible, so this is often a single default).Likely your export tool

14007 of 14007 trips don't say whether the vehicle is wheelchair accessible. Even with accessible stops, riders need to know the bus itself can take them.

⏱ Often one default setting in your export.worth about +15 points

Agencies here usually clear this within about 1 week (based on 5 observed fixes).

This feed URL points at the TransitFeeds archive, which is no longer maintained. Before any single fix, publish the feed from a live URL you control and update the listings that still point here.

Close the loop on each fix. Read the guide, make the change in your tool, and let the next run verify it — the scorecard shows the fix; the agency publishes it.

Re-export the feed with a calendar that reaches further out, and set feed_info feed_end_date past your next service change. · Read the fix guide
Make the change. This feed URL points at the TransitFeeds archive, which is no longer maintained. Before any single fix, publish the feed from a live URL you control and update the listings that still point here.
Prove it cleared. The next scorecard run re-checks this automatically and, once it is gone, mints a dated receipt. 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. This feed URL points at the TransitFeeds archive, which is no longer maintained. Before any single fix, publish the feed from a live URL you control and update the listings that still point here.
Prove it cleared. The next scorecard run re-checks this automatically and, once it is gone, mints a dated receipt. Self-check a feed before you publish.
Set wheelchair_accessible on every trip (most small-agency fleets are 100% accessible, so this is often a single default). · Read the fix guide
Make the change. This feed URL points at the TransitFeeds archive, which is no longer maintained. Before any single fix, publish the feed from a live URL you control and update the listings that still point here.
Prove it cleared. The next scorecard run re-checks this automatically and, once it is gone, mints a dated receipt. Self-check a feed before you publish.

Send your vendor a fix request

This feed is served from the TransitFeeds archive, which is no longer maintained. The most useful request is publishing the current feed from a live URL, then these fixes. Each fix names the validator notice and a guide link.

Hi,

Our GTFS feed (Alameda-Contra Costa Transit District (AC Transit)) scored F (52.2 out of 100) on the GTFS Scorecard. Could you review these in our export settings:

1. Re-export the feed with a calendar that reaches further out, and set feed_info feed_end_date past your next service change.
   What: Service data ended 859 day(s) ago.
   Validator notice: scorecard_feed_expired
   Guide: https://gtfsscorecard.org/fix/scorecard_feed_expired/

2. Set wheelchair_boarding to 1 (accessible) or 2 (not accessible) for every stop. A field survey can start with the busiest stops.
   What: 4754 of 4754 stops don't say whether a wheelchair user can board there.
   Validator notice: scorecard_wheelchair_boarding_unknown
   Guide: https://gtfsscorecard.org/fix/scorecard_wheelchair_boarding_unknown/

3. Set wheelchair_accessible on every trip (most small-agency fleets are 100% accessible, so this is often a single default).
   What: 14007 of 14007 trips don't say whether the vehicle is wheelchair accessible.
   Validator notice: scorecard_wheelchair_accessible_unknown
   Guide: https://gtfsscorecard.org/fix/scorecard_wheelchair_accessible_unknown/

Full scorecard: https://gtfsscorecard.org/agency/alameda-contra-costa-transit-district-ac-transit/

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.

Hi Alameda-Contra Costa Transit District (AC Transit) team,

Service data ended 859 day(s) ago. When the calendar runs out, trip planners stop showing this agency even though the buses are still running. Riders are told the service does not exist.

The fix is usually one export setting: Re-export the feed with a calendar that reaches further out, and set feed_info feed_end_date past your next service change.

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/alameda-contra-costa-transit-district-ac-transit/

Score by category

Correctness76.5 / 100

The MobilityData validator flagged 7 kinds of issue across 124 instances (0 error, 53 warning, 71 informational).

Freshness0.0 / 100

Service data ended 859 day(s) ago. Trip planners have likely already dropped this feed.

Rider experience60.0 / 100

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.

Accessibility0 / 100

0% of stops state accessibility (0% marked accessible). Reflects what the feed states, not verified physical usability.

FaresLegacy fares

Fares are applied to trips.

Realtime qualityNot yet measured

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.

Basemap: OpenFreeMap, © OpenStreetMap contributors. Routes and stops: this agency's GTFS feed.

10 (teal)
12 (teal)
14 (teal)
18 (red)
19 (teal)
1T (purple)
20 (teal)
200 (teal)
21 (teal)
210 (teal)
212 (teal)
215 (teal)
216 (teal)
217 (teal)
232 (teal)
239 (teal)
251 (teal)
28 (teal)
29 (teal)
33 (teal)
34 (teal)
35 (teal)
36 (teal)
376 (orange)
39 (teal)
40 (red)
41 (teal)
45 (teal)
46L (teal)
51A (red)
51B (red)
52 (teal)
54 (red)
56 (teal)
57 (red)
6 (red)
60 (teal)
604 (gray)
605 (gray)
606 (gray)
607 (gray)
617 (gray)
62 (teal)
620 (gray)
621 (gray)
623 (gray)
624 (gray)
625 (gray)
626 (gray)
628 (gray)
629 (gray)
631 (gray)
638 (gray)
641 (gray)
642 (gray)
646 (gray)
648 (gray)
649 (gray)
65 (teal)
650 (gray)
651 (gray)
652 (gray)
653 (gray)
654 (gray)
655 (gray)
657 (gray)
658 (gray)
660 (gray)
662 (gray)
663 (gray)
667 (gray)
669 (gray)
67 (teal)
671 (gray)
672 (gray)
675 (gray)
676 (gray)
677 (gray)
680 (gray)
681 (gray)
682 (gray)
683 (gray)
684 (gray)
687 (gray)
688 (gray)
696 (gray)
7 (teal)
70 (teal)
701 (blue)
702 (blue)
703 (blue)
706 (blue)
707 (blue)
71 (teal)
72 (teal)
72M (teal)
72R (red)
73 (red)
74 (teal)
76 (teal)
79 (teal)
800 (orange)
801 (orange)
802 (orange)
805 (orange)
840 (orange)
851 (orange)
86 (teal)
88 (teal)
90 (teal)
93 (teal)
95 (teal)
96 (teal)
97 (teal)
98 (teal)
99 (teal)
E (orange)
F (teal)
FS (orange)
G (orange)
J (orange)
L (orange)
LA (orange)
NL (teal)
NX (orange)
NX3 (orange)
O (teal)
OX (orange)
P (orange)
U (orange)
V (orange)
W (orange)

Routes in Alameda-Contra Costa Transit District (AC Transit)'s feed
Route	Type	Line color
10 E. 14th St. - Mission	Bus	teal
12 MLK Jr. - Temescal - Grand	Bus	teal
14 14th St - San Antonio - High St	Bus	teal
18 Solano - Shattuck - MLK Jr.	Bus	red
19 Buena Vista - Fruitvale	Bus	teal
1T Uptown Oakland\ San Leandro BART Southbound OWL	Bus	purple
20 Dimond - Fruitvale - South Shore	Bus	teal
200 Decoto - Newark Blvd. - Mowry	Bus	teal
21 Dimond - Fruitvale - Bay Farm	Bus	teal
210 Fremont Blvd. - Mission San Jose	Bus	teal
212 Fremont Blvd. - Pacific Commons	Bus	teal
215 Osgood - Warm Springs - Landing	Bus	teal
216 Niles - Stevenson - NewPark	Bus	teal
217 Mission San Jose - Milpitas	Bus	teal
232 Mission - Decoto - NewPark	Bus	teal
239 Grimmer - Warm Springs	Bus	teal
251 Paseo Padre - Thornton - Cherry	Bus	teal
28 Alvarado - Castro Valley - B St.	Bus	teal
29 Hollis - Peralta - Lakeshore	Bus	teal
33 Piedmont - Harrison - Park Blvd.	Bus	teal
34 Estudillo - Davis - Meekland	Bus	teal
35 Estudillo - Davis - Lewelling	Bus	teal
36 Dwight - Shellmound - Adeline	Bus	teal
376 Cutting - North Richmond Nights	Bus	orange
39 Skyline - Dimond - Fruitvale	Bus	teal
40 Foothill - Bancroft - Bay Fair	Bus	red
41 Whitman - Huntwood - Union Landg	Bus	teal
45 Seminary - Sobrante Park	Bus	teal
46L 82nd Ave. - Grass Valley Limited	Bus	teal
51A Broadway - Santa Clara	Bus	red
51B University - College - Rockridge	Bus	red
52 UC Village - Cedar - UC Campus	Bus	teal
54 35th Ave. - Merritt College	Bus	red
56 Santa Clara - Weekes - Huntwood	Bus	teal
57 40th St. - MacArthur	Bus	red
6 Berkeley - Telegraph - Oakland	Bus	red
60 CSUEB - Southland - Chabot Coll	Bus	teal
604 Head Royce - Hebrew Day - Berk.	Bus	gray
605 Head Royce - Montclair - College	Bus	gray
606 Head Royce - Piedmont	Bus	gray
607 Richmond High - Point Richmond	Bus	gray
617 Skyline High - Seminary	Bus	gray
62 7th St. - San Antonio - 23rd Av.	Bus	teal
620 Newark Jr. High - Cedar	Bus	gray
621 American High - Thornton Jr.	Bus	gray
623 Irvington High - Horner Jr. High	Bus	gray
624 Mission San Jose - Hopkins Jr.	Bus	gray
625 Washington - Centerville Jr.	Bus	gray
626 Newark Memorial - Newark Blvd.	Bus	gray
628 Newark Memorial - Cedar	Bus	gray
629 Newark Memorial - Cherry - Haley	Bus	gray
631 Encinal - Alameda - Bay Farm	Bus	gray
638 Skyline High - 73rd Ave.	Bus	gray
641 Fremont H.S. Frick Middle - 1	Bus	gray
642 Montera - Montclair - Colton	Bus	gray
646 Montera - Skyline - 82nd Ave.	Bus	gray
648 Skyline - Comm. Day - High St.	Bus	gray
649 Montera - Skyline - Grass Valley	Bus	gray
65 Grizzly Peak - Euclid	Bus	teal
650 Montera - Oakmore - Seminary	Bus	gray
651 SB MAIN - Oakland Tech to 12th & Clay	Bus	gray
652 Skyline High - Elmhurst	Bus	gray
653 Montera - MacArthur	Bus	gray
654 Skyline High - 35th Ave.	Bus	gray
655 Montera - 35th Ave.	Bus	gray
657 Oak High - Oak Tech - MacArthur	Bus	gray
658 Skyline - Bret Harte - MacArthur	Bus	gray
660 Montera - Broadway Terrace	Bus	gray
662 Skyline High - Broadway Terrace	Bus	gray
663 Encinal - South Shore - High St.	Bus	gray
667 Korematsu - E.C. - No. Richmond	Bus	gray
669 Crespi Middle - San Pablo Dam	Bus	gray
67 Tilden Park - Spruce - Oxford	Bus	teal
671 De Anza - Crespi - Fairmede	Bus	gray
672 Crespi - Hiltop - Broadway	Bus	gray
675 Korematsu - El Cerrito - Carlson	Bus	gray
676 De Anza - Crespi - Rollingwood	Bus	gray
677 Montera - Broadway Terrace	Bus	gray
680 Bishop O'Dowd High - MacArthur	Bus	gray
681 DeJean - Cutting - Macdonald	Bus	gray
682 Bishop O'Dowd High - Montclair	Bus	gray
683 Moraga & Medau\ Bishop O'Dowd	Bus	gray
684 El Cerrito - Arlington - Garvin	Bus	gray
687 Lincoln Middle - Bay Farm	Bus	gray
688 St. Mary's College - Montclair	Bus	gray
696 Oakland Tech - Montclair	Bus	gray
7 Arlington - 1000 Oaks - Shattuck	Bus	teal
70 Rheem - San Pablo Dam - Appian	Bus	teal
701 Pittsburg/BP Transbay Early Bird	Bus	blue
702 Pleas Hill Transbay Early Bird	Bus	blue
703 Dubl/Plsntn Transbay Early Bird	Bus	blue
706 Bay Fair Transbay Early Bird	Bus	blue
707 Fremont - Transbay Early Bird	Bus	blue
71 Parchester - Rumrill - Carlson	Bus	teal
72 Hilltop - CCC - San Pablo	Bus	teal
72M Macdonald - San Pablo	Bus	teal
72R San Pablo Rapid	Bus	red
73 73rd Ave. - Coliseum - Airport	Bus	red
74 San Pablo Dam - 23rd St.	Bus	teal
76 Hilltop - Market - Cutting	Bus	teal
79 Colusa - The Alameda - Claremont	Bus	teal
800 Rich - Oak Transbay All Nighter	Bus	orange
801 E 14th - Mission All Nighter	Bus	orange
802 San Pablo All Nighter	Bus	orange
805 MacArthur - Airport All Nighter	Bus	orange
840 Foothill - Eastmont All Nighter	Bus	orange
851 College - Broadway All Nighter	Bus	orange
86 Winton - Industrial - Tennyson	Bus	teal
88 Sacramento - Market	Bus	teal
90 85th Ave. - Elmhurst - 90th Ave.	Bus	teal
93 Ashland - San Lorenzo - A St.	Bus	teal
95 D St. - Maud - Fairview	Bus	teal
96 Alameda Pt. - 14th Ave. - Dimond	Bus	teal
97 Hesperian - Alvarado - Decoto	Bus	teal
98 Eastmont - 98th Ave. - Edgewater	Bus	teal
99 Mission - Decoto - Fremont Blvd.	Bus	teal
E Tunnel Rd. - Claremont Transbay	Bus	orange
F Adeline - Market Transbay	Bus	teal
FS Shattuck - University Transbay	Bus	orange
G Colusa - Solano Transbay	Bus	orange
J Sacramento - Christie Transbay	Bus	orange
L San Pablo - Pierce Transbay	Bus	orange
LA Hilltop - Pierce Transbay	Bus	orange
NL MacArthur Transbay Limited	Bus	teal
NX Grand Lake - Laurel Transbay	Bus	orange
NX3 MacArthur - Eastmont Transbay	Bus	orange
O Santa Clara - Encinal Transbay	Bus	teal
OX Bay Farm - Park St. Transbay	Bus	orange
P Piedmont - Oakland Ave. Transbay	Bus	orange
U Stanford - Dumbarton - Fremont	Bus	orange
V Montclair - Park Blvd. Transbay	Bus	orange
W High - South Shore Transbay	Bus	orange

This feed has 4754 stops.

List every stop

Aughinbaugh Way & Robert Davey Jr Dr
2217 Otis Dr
Auto Mall Pkwy & Osgood Rd
Auto Mall Pkwy & Osgood Rd
Auto Mall Pkwy & Technology Dr
Auto Mall Pkwy & Technology Dr
Landing Pkwy & Tennis Court
Blacow Rd & Greenpark Dr (Irvington High School)
Blacow Rd & Greenpark Dr (Irvington High School)
Bryant St & Cedar St
Bryant St & Pine St
Chapel Way & Carol Av (Hirsch School)
Chapel Way & Laurel St (Horner Jr High School)
Civic Center Dr & BART Way
Civic Center Dr & Mowry Av (Washington Hospital)
Civic Center Dr & Stevenson Blvd
Civic Center Dr & Stevenson Blvd
Civic Center Dr & Walnut Av
Civic Center Dr & Walnut Av
Otis Dr & Broadway
Decoto Rd & Cabrillo Dr
Decoto Rd & Cabrillo Dr
Decoto Rd & Ozark River Way
Decoto Rd & Ozark River Way
Driscoll Rd & Amapola Dr (Hopkins Jr High School)
Driscoll Rd & Durillo Dr
Driscoll Rd & Hopkins Jr High School
Otis Dr & Broadway
Durham Rd & Paseo Padre Pkwy
Fremont BART
Fremont BART
Fremont BART
Fremont BART
Fremont BART
38932 Fremont Blvd (Near Mowry Av)
Fremont Blvd & Adams Av
Fremont Blvd & Adams Av
Fremont Blvd & Alder Av (American Sr High School)
Fremont Blvd & Alder Av (American Sr High School)
Fremont Blvd & Beacon Av
Fremont Blvd & Beacon Av
Fremont Blvd & Bidwell Dr
Fremont Blvd & Blacow Rd
Fremont Blvd & Bonde Way
Fremont Blvd & Carol Av
Fremont Blvd & Centerville Jr High School
Fremont Blvd & Central Av
Fremont Blvd & Chapel Way
Fremont Blvd & Country Dr
Fremont Blvd & Crestwood St
Fremont Blvd & Crestwood St
Fremont Blvd & Darwin Dr
Fremont Blvd & Decoto Rd
Otis Dr & High St
Fremont Blvd & Decoto Rd
Fremont Blvd & Delaware Dr
Fremont Blvd & Delaware Dr
Fremont Blvd & Doane St
Fremont Blvd & Doane St
Fremont Blvd & Eggers Dr
Fremont Blvd & Eggers Dr
Fremont Blvd & Enea Ct
Fremont Blvd & Enea Ct
Fremont Blvd & Ferry Ln
Fremont Blvd & Ferry Ln
Fremont Blvd & Gibraltar Dr
Fremont Blvd & Grimmer Blvd
Fremont Blvd & I 880 Fwy
Fremont Blvd & Industrial Dr
Fremont Blvd & Industrial Dr
Fremont Blvd & London Com
Fremont Blvd & Michael Av
Fremont Blvd & Mission View Dr
Fremont Blvd & Montrose Av
Fremont Blvd & Mowry Av
Fremont Blvd & Mowry Av
Fremont Blvd & Nicolet Av
Fremont Blvd & Nicolet Av
Fremont Blvd & Norris Rd
Fremont Blvd & Village Ter
Fremont Blvd & Papazian Way
Otis Dr & Mound St
Fremont Blvd & Paseo Padre Pkwy
Fremont Blvd & Peralta Ct
Fremont Blvd & Stevenson Blvd
Fremont Blvd & Stevenson Blvd
Fremont Blvd & Sundale Dr
Fremont Blvd & Sundale Dr
Aughinbaugh Way & Robert Davey Jr Dr
Otis Dr & Park St
Fremont Blvd & Tamayo St
Fremont Blvd & Tamayo St
Fremont Blvd & Thornton Av
Fremont Blvd & Washington Blvd
Fremont Blvd & Washington Blvd
Gallaudet Dr & In School For Deaf
Gallaudet Dr & In School For D
Gallaudet Dr & Walnut Av
Grimmer Blvd & Auto Mall Pkwy
Otis Dr & Park St
Grimmer Blvd & Blacow Rd
Grimmer Blvd & Blacow Rd
Grimmer Blvd & Carol Av
Grimmer Blvd & Davis St
Grimmer Blvd & Davis St
Grimmer Blvd & Doane St
Grimmer Blvd & Fremont Blvd
Grimmer Blvd & Irvington Av
Otis Dr & S Shore Ctr
Grimmer Blvd & Irvington Av
Grimmer Blvd & Paseo Padre Pkwy
Grimmer Blvd & Seneca Park Av
Grimmer Blvd & Valpey Park Av
Grimmer Blvd & Valpey Park Av
Grimmer Blvd & Yellowstone Park Dr
Landing Pkwy & Fremont Blvd
48501 Milmont Dr
Otis Dr & Westline Dr
48641 Milmont Dr
Milmont Dr & Kato Rd
38576 Mission Blvd (Near Mowry Av)
Mission Blvd & Antelope Dr (S Grimmer Blvd)
Mission Blvd & Anza St
Mission Blvd & Anza St
Mission Blvd & Calle Amigo Dr
Mission Blvd & Calle Amigo Dr
Mission Blvd & Callery Ct
Mission Blvd & Callery Ct
Mission Blvd & Cedar St
Mission Blvd & Cougar Dr
Mission Blvd & Dalgo Rd
Mission Blvd & Castro Ln
Mission Blvd & Driscoll Rd
Mission Blvd & Esparito Av
Mission Blvd & Hunter Ln
Mission Blvd & I-680 Fwy
Mission Blvd & I-680 Fwy
Mission Blvd & Las Palmas Av
Mission Blvd & Las Palmas Av
Mission Blvd & Mackintosh St
Mission Blvd & Mill Creek Rd
Mission Blvd & Mohave Dr
Mission Blvd & Nursery Av
Mission Blvd & Nursery Av
Mission Blvd & Ondina Dr
Mission Blvd & Orchard Dr
Mission Blvd & Palm Av (Mission San Jose High)
Mission Blvd & Palm Av (Mission San Jose High)
Otis Dr & Willow St
Mission Blvd & Paseo Padre Pkwy
Mission Blvd & Paseo Padre Pkwy
Mission Blvd & Pine St
Mission Blvd & Starr St
Mission Blvd & Stevenson Blvd
Mission Blvd & Stevenson Blvd
Mission Blvd & Via San Dimas
Mission Blvd & Via San Dimas
Mission Blvd & Washington Blvd
Mission Blvd & Washington Blvd
Pacific Av & 4th St
Mowry Av & Argonaut Way
Mowry Av & Glenview Dr
Mowry Av & Logan Dr
2557 Mowry Av
300 Mowry Av
Mowry Av & Alpenrose Ct
Mowry Av & Argonaut Way
Mowry Av & Blacow Rd
Mowry Av & Bonner Av
Mowry Av & Bonner Av
Pacific Av & Main St
Mowry Av & Cherry Ln
Mowry Av & Cherry Ln
Mowry Av & Farwell Dr
Mowry Av & Farwell Dr
Mowry Av & Lexington St
Mowry Av & Fremont Blvd
Mowry Av & Fremont Blvd
Mowry Av & Guardino Dr
Mowry Av & Guardino Dr
Mowry Av & Hastings St
Park St & Blanding Av
Mowry Av & Lexington St
Mowry Av & Mission Blvd
Mowry Av & Parkside Dr (Washington Hosp.Emer.Ent.)
Mowry Av & Parkside Dr
Mowry Av & Paseo Padre Pkwy
Mowry Av & Paseo Padre Pkwy
Mowry Av & State St
Ardenwood Blvd & Fwy 84
37395 Niles Blvd
Niles Blvd & E St
Aughinbaugh Way & The Lagoon
Niles Blvd & E St
Niles Blvd & El Portal Av
Niles Blvd & El Portal Av
Niles Blvd & F St
Niles Blvd & H St
Niles Blvd & Hillview Dr
Niles Blvd & Hillview Dr
Niles Blvd & J St
Niles Blvd & J St
Niles Blvd & Nursery Av
Park St & Clement Av
Niles Blvd & Nursery Av
Niles Blvd & Torrano Com (East Jctn)
Niles Blvd & Vallejo St
Niles Blvd & Vallejo St
Niles Blvd & F St
Ohlone College Key C
Ohlone College-Key C
Ohlone College-Key D
Osgood Rd & Auto Mall Pkwy
Osgood Rd & Auto Mall Pkwy
Osgood Rd & Blacow Rd
Osgood Rd & Blacow Rd
Osgood Rd & Osgood Ct
Osgood Rd & Osgood Ct
Osgood Rd & Prune Av
Park St & Otis Dr
Osgood Rd & Washington Blvd
Page Av & Kato Rd
Page Av & Milmont St
Paseo Padre Pkwy & Blackstone Way
Paseo Padre Pkwy & Blackstone Way
Paseo Padre Pkwy & Bowlingreen Com
Paseo Padre Pkwy & Chadbourne Dr
Paseo Padre Pkwy & Chaucer Dr
Paseo Padre Pkwy & Country Dr
Park St & Otis Dr
Paseo Padre Pkwy & Country Dr
Paseo Padre Pkwy & Covington Dr
Paseo Padre Pkwy & Cree Rd
Paseo Padre Pkwy & Darwin Dr
Paseo Padre Pkwy & Darwin Dr
Paseo Padre Pkwy & Deep Creek Rd
Paseo Padre Pkwy & Deep Creek Rd
Paseo Padre Pkwy & Driscoll Rd
Paseo Padre Pkwy & Eggers Dr
Paseo Padre Pkwy & Ethel St (Near Eggers Dr)
Park St & San Jose Av
Paseo Padre Pkwy & Fremont Blvd
Paseo Padre Pkwy & Fremont Blvd
Paseo Padre Pkwy & Indian Hill Pl
Paseo Padre Pkwy & Kokoma Rd
Paseo Padre Pkwy & Langhorn Dr
Paseo Padre Pkwy & Milton St
Paseo Padre Pkwy & Mission Blvd
Paseo Padre Pkwy & Mission View Dr
Paseo Padre Pkwy & Mission View Dr
and 4504 more (see the full list on the map or in the GeoJSON)

Over time

Overall score across the last 20 checks — unchanged since 2026-07-08.

Show the numbers

Overall score by check, with the change from the previous check
Check	Score	Change
2026-06-19	52.2	first check
2026-06-20	52.2	no change
2026-06-21	52.2	no change
2026-06-22	52.2	no change
2026-06-23	52.2	no change
2026-06-24	52.2	no change
2026-06-25	52.2	no change
2026-06-26	52.2	no change
2026-06-27	52.2	no change
2026-06-28	52.2	no change
2026-06-29	52.2	no change
2026-06-30	52.2	no change
2026-07-01	52.2	no change
2026-07-02	52.2	no change
2026-07-04	52.2	no change
2026-07-05	52.2	no change
2026-07-06	52.2	no change
2026-07-07	52.2	no change
2026-07-08	52.2	no change
2026-07-09	52.2	no change

What changed since your last check

Correctness no change
Freshness no change
Rider experience no change

What changed in this feed

Overall grade and score held steady since 2026-07-08.

Same feed file as 2026-07-08; the published zip did not change.

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Everything we checked

Error1 instance
Service data ended 859 day(s) ago.
When the calendar runs out, trip planners stop showing this agency even though the buses are still running. Riders are told the service does not exist.
Fix: Re-export the feed with a calendar that reaches further out, and set feed_info feed_end_date past your next service change. (Usually one export setting; export on a schedule so it never lapses again.)
Agencies here usually clear this within about 1 week (based on 18 observed fixes).
Validator rule: scorecard_feed_expired · Read the fix guide · See GTFS Best Practices (opens GTFS Best Practices on an external site)
Warning14007 instances
14007 of 14007 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 (most small-agency fleets are 100% accessible, so this is often a single default). (Often one default setting in your export.)
Agencies here usually clear this within about 1 week (based on 5 observed fixes).
Validator rule: scorecard_wheelchair_accessible_unknown · Read the fix guide · See GTFS Schedule reference (opens the GTFS Schedule reference on an external site)
Warning4754 instances
4754 of 4754 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.)
Validator rule: scorecard_wheelchair_boarding_unknown · Read the fix guide · See GTFS Schedule reference (opens the GTFS Schedule reference on an external site)
Warning45 instances
Some service calendars in the feed have already ended.
Expired calendars are dead weight and can hide real schedule problems from your staff and vendors.
Fix: Remove past service periods the next time you export the feed. (One setting in most export tools.)
Agencies here usually clear this within about 1 week (based on 61 observed fixes).
Validator rule: expired_calendar · Read the fix guide · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
Warning5 instances
Some files leave out fields that GTFS asks for but does not require.
Recommended fields like agency_phone or stop descriptions make the feed more useful to riders and trip planners.
Fix: Review the flagged fields and fill in the ones your riders would use. (A field at a time; not urgent.)
Agencies here usually clear this within about 2 weeks (based on 8 observed fixes).
Validator rule: missing_recommended_field · 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 7 days.
When the calendar ends, Google Maps and other trip planners drop your agency entirely. Riders see no service at all.
Fix: Export and publish an updated GTFS feed that covers at least the next 30 days of service. (Usually a re-export from your scheduling software.)
Agencies here usually clear this within about 1 week (based on 16 observed fixes).
Validator rule: feed_expiration_date7_days · Read the fix guide · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
Warning1 instance
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.
Fix: Use mixed case for stop names and headsigns (e.g. 'Main St & 2nd Ave', not 'MAIN ST & 2ND AVE'). (Often a bulk fix in your scheduling software.)
Validator rule: mixed_case_recommended_field · Read the fix guide · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
Warning1 instance
Many of the feed's trips don't run at all in the next 7 days.
It usually means old service periods are still in the export, making the feed bigger and harder to check.
Fix: Trim past service periods the next time you export. (One setting in most export tools.)
Agencies here usually clear this within about 1 week (based on 31 observed fixes).
Validator rule: trip_coverage_not_active_for_next7_days · Read the fix guide · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
Info37 instances
Big gap in service (flagged by the MobilityData validator).
See the linked rule for what this affects.
Fix: Review the rule documentation for 'big_gap_in_service' at https://gtfs-validator.mobilitydata.org/rules.html and check the flagged rows in your feed. (Varies.)
Agencies here usually clear this within about 1 week (based on 13 observed fixes).
Validator rule: big_gap_in_service · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
Info34 instances
Trip headsign matches intermediate stop (flagged by the MobilityData validator).
See the linked rule for what this affects.
Fix: Review the rule documentation for 'trip_headsign_matches_intermediate_stop' at https://gtfs-validator.mobilitydata.org/rules.html and check the flagged rows in your feed. (Varies.)
Validator rule: trip_headsign_matches_intermediate_stop · 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.

4534 stop name(s) use abbreviations or symbols a screen reader may mispronounce, with no spoken form set ("103rd Avenue", "103rd Avenue", "73rd Avenue", and more).
Consider: Add tts_stop_name with the spoken form, e.g. 'Main Street and Second Avenue', for the affected stops.

NTD certification readiness Not ready

Resolve this before you certify on the D-10. Service data expired 859 days ago, so FTA would find the link out of date.

Published Ready: Published at a public URL.
Valid Ready: Passes validation with no errors.
Current Not ready: Service data expired 859 days ago, so FTA would find the link out of date.

agency_id matches your NTD ID Not aligned: Your feed's agency_id is 1; your National Transit Database ID is 90014. A feed that serves several agencies (a shared regional feed) can legitimately carry more than one agency_id, so a difference here is a heads-up, not an error. Optionally set the agency_id for your service to 90014 in agency.txt (and the matching agency_id in routes.txt) so the feed lines up with your NTD record. It is a convenience, not a required feed change: FTA also links agency_id to your NTD ID on your P-50 form.

shapes.txt covers your trips Ready: All 14007 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 and confirm it once a year. This box is a heads-up on whether yours looks ready; it is not the official sign-off.

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). Aligning agency_id with your NTD ID lets the feed line up with your NTD record; the July 2025 final rule links the two on the P-50 form rather than requiring that feed change, and 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 expired 859 days ago. 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 expired 859 days ago.
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.

Below the Google and Apple Maps four-week coverage bar. This feed's last day of service has passed, so Google and Apple Maps will stop showing your agency. Re-export with a calendar that covers at least the next four weeks.

How this agency maps to the standards

A data-quality lens, not a compliance determination. Each category shows this feed's score and the standards it relates to: the FTA National Transit Database GTFS requirement, the MobilityData grading scheme, and the Google Transit gate. 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 14007 trips have a shape in shapes.txt.
Meets Fare data published, or the service marked fare-free
Fare data is published.

Correctness 76 / 100: GTFS Schedule best practices, checked by the MobilityData validator. MobilityData grading: stop locations, route names and colors. Google Transit: a feed must pass validation to stay in Maps.
Freshness 0 / 100: The FTA National Transit Database expectation of a valid, current feed. Google Transit: an expired calendar drops the agency from Maps.
Rider experience 60 / 100: GTFS Best Practices for rider-facing fields. MobilityData grading: stop names and headsigns.
Realtime quality Not yet published: GTFS-Realtime best practices: a stable URL, high uptime, and frequent updates.

Show your grade

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[![Alameda-Contra Costa Transit District (AC Transit) GTFS data quality grade: F](https://gtfsscorecard.org/data/artifacts/alameda-contra-costa-transit-district-ac-transit/badge.svg)](https://gtfsscorecard.org/agency/alameda-contra-costa-transit-district-ac-transit/)

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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/alameda-contra-costa-transit-district-ac-transit/2026-07-09.json and never overwritten, pinning the grade, category scores, rubric version, validator version, and the scored feed's sha256 as they stood on 2026-07-09. Use it in a board packet, an NTD narrative, or a research citation instead of linking the live page, whose content will differ on your next visit.

GTFS Scorecard. (2026). Alameda-Contra Costa Transit District (AC Transit) GTFS feed-quality record, dated 2026-07-09 (grade F (52.2/100), rubric v1.1, gtfs-validator 8.0.1, feed sha256 eb583a14e931…). https://gtfsscorecard.org/data/artifacts/alameda-contra-costa-transit-district-ac-transit/2026-07-09.json

@misc{gtfsscorecard-alameda-contra-costa-transit-district-ac-transit-2026-07-09,
  title        = {Alameda-Contra Costa Transit District (AC Transit) GTFS feed-quality record},
  author       = {GTFS Scorecard},
  year         = {2026},
  howpublished = {\url{https://gtfsscorecard.org/data/artifacts/alameda-contra-costa-transit-district-ac-transit/2026-07-09.json}},
  note         = {Checked 2026-07-09; rubric v1.1; gtfs-validator 8.0.1; grade F (52.2/100)}
}

Citing the tool itself rather than one agency's record? Use the repo's CITATION.cff.