All agencies

135 transit agencies, each with a GTFS data quality grade and the fixes to start with. Search them in the app.

• F grade

  Alhambra Community Transit

  Overall 47.6 out of 100 · checked 2026-06-16

• B grade

  Amador Transit

  Overall 81.3 out of 100 · checked 2026-06-16

• F grade

  Amtrak San Joaquins

  Overall 58.4 out of 100 · checked 2026-06-16

• F grade

  Arcadia Transit

  Overall 44.7 out of 100 · checked 2026-06-16

• F grade

  Arvin Transit

  Overall 42.4 out of 100 · checked 2026-06-16

• F grade

  Auburn Transit

  Overall 17.5 out of 100 · checked 2026-06-16

• F grade

  Avalon Transit

  Overall 56.4 out of 100 · checked 2026-06-16

• F grade

  Baldwin Park Transit

  Overall 39.1 out of 100 · checked 2026-06-16

• D grade

  Beach Cities Transit

  Overall 68.1 out of 100 · checked 2026-06-16

• B grade

  Beaumont Transit

  Overall 84.1 out of 100 · checked 2026-06-16

• B grade

  Bellflower Bus

  Overall 82.3 out of 100 · checked 2026-06-16

• C grade

  Blossom Express

  Overall 76.5 out of 100 · checked 2026-06-16

• D grade

  BurbankBus

  Overall 63.8 out of 100 · checked 2026-06-16

• F grade

  Calabasas Transit System

  Overall 47.5 out of 100 · checked 2026-06-16

• F grade

  Calaveras Transit

  Overall 59.8 out of 100 · checked 2026-06-16

• C grade

  Camarillo Area Transit

  Overall 77.6 out of 100 · checked 2026-06-16

• C grade

  Capitol Corridor Joint Powers Authority (Capitol Corridor)

  Overall 79.1 out of 100 · checked 2026-06-16

• F grade

  Carson Circuit

  Overall 42.7 out of 100 · checked 2026-06-16

• F grade

  Catalina Flyer

  Overall 47.6 out of 100 · checked 2026-06-16

• D grade

  City Coach

  Overall 62.8 out of 100 · checked 2026-06-16

• B grade

  City of Banning Transit

  Overall 85.3 out of 100 · checked 2026-06-16

• F grade

  City of Bell (La Campana)

  Overall 44.7 out of 100 · checked 2026-06-16

• D grade

  City of Madera

  Overall 68.2 out of 100 · checked 2026-06-16

• B grade

  City of San Luis Obispo Transit

  Overall 86.4 out of 100 · checked 2026-06-16

• F grade

  City of Tracy

  Overall 52.1 out of 100 · checked 2026-06-16

• F grade

  City of Tracy (TRACER)

  Overall 14.6 out of 100 · checked 2026-06-16

• F grade

  Clovis Transit

  Overall 59.8 out of 100 · checked 2026-06-16

• C grade

  Commerce Municipal Bus Lines

  Overall 79.8 out of 100 · checked 2026-06-16

• F grade

  Compton Renaissance

  Overall 32.4 out of 100 · checked 2026-06-16

• B grade

  Corona Cruiser

  Overall 84.0 out of 100 · checked 2026-06-16

• F grade

  Cudahy Area Rapid Transit

  Overall 41.7 out of 100 · checked 2026-06-16

• D grade

  Culver City Bus

  Overall 66.1 out of 100 · checked 2026-06-16

• B grade

  Delano Area Rapid Transit

  Overall 87.5 out of 100 · checked 2026-06-16

• F grade

  Duarte Transit

  Overall 46.8 out of 100 · checked 2026-06-16

• B grade

  Eastern Sierra Transit

  Overall 85.5 out of 100 · checked 2026-06-16

• B grade

  El Dorado County Transit Authority

  Overall 84.1 out of 100 · checked 2026-06-16

• F grade

  El Monte Transit

  Overall 51.7 out of 100 · checked 2026-06-16

• F grade

  El Segundo Transportation

  Overall 43.8 out of 100 · checked 2026-06-16

• F grade

  Emery Go-Round

  Overall 54.6 out of 100 · checked 2026-06-16

• A grade

  eTrans

  Overall 96.6 out of 100 · checked 2026-06-16

• F grade

  Fairfield and Suisun Transit (FAST)

  Overall 55.9 out of 100 · checked 2026-06-16

• A grade

  Fresno County Rural Transit Agency (FCRTA)

  Overall 90.2 out of 100 · checked 2026-06-17

• C grade

  Glendora Transportation Division

  Overall 74.3 out of 100 · checked 2026-06-16

• F grade

  Glenn Transit Service

  Overall 33.5 out of 100 · checked 2026-06-16

• F grade

  Go West Shuttle

  Overall 48.5 out of 100 · checked 2026-06-16

• B grade

  Golden Empire Transit District (GET)

  Overall 89.1 out of 100 · checked 2026-06-16

• C grade

  GrapeLine

  Overall 75.5 out of 100 · checked 2026-06-16

• F grade

  GTrans

  Overall 23.0 out of 100 · checked 2026-06-16

• F grade

  Guadalupe Flyer

  Overall 47.5 out of 100 · checked 2026-06-16

• A grade

  Humboldt Transit Authority

  Overall 94.3 out of 100 · checked 2026-06-16

• F grade

  Huntington Park Express

  Overall 48.8 out of 100 · checked 2026-06-16

• B grade

  Kern Transit

  Overall 83.1 out of 100 · checked 2026-06-16

• F grade

  Kings Area Rural Transit

  Overall 42.4 out of 100 · checked 2026-06-16

• F grade

  La Puente LINK

  Overall 43.8 out of 100 · checked 2026-06-16

• F grade

  LADOT (DASH and Commuter Express)

  Overall 57.2 out of 100 · checked 2026-06-16

• F grade

  Laguna Beach Transit (LBT)

  Overall 54.2 out of 100 · checked 2026-06-16

• C grade

  Lake Transit Authority (LTA)

  Overall 79.8 out of 100 · checked 2026-06-16

• B grade

  Lassen Rural Bus (LRB)

  Overall 80.5 out of 100 · checked 2026-06-16

• B grade

  Lawndale Beat

  Overall 82.8 out of 100 · checked 2026-06-16

• B grade

  Los Angeles County Department of Public Works (the LINK and shuttles)

  Overall 85.6 out of 100 · checked 2026-06-16

• B grade

  Madera County Transit

  Overall 83.9 out of 100 · checked 2026-06-16

• C grade

  Manteca Transit

  Overall 79.6 out of 100 · checked 2026-06-16

• C grade

  Marin Transit

  Overall 77.7 out of 100 · checked 2026-06-16

• B grade

  Mendocino Transit Authority

  Overall 81.4 out of 100 · checked 2026-06-16

• F grade

  Merced County Transit (The Bus)

  Overall 47.7 out of 100 · checked 2026-06-16

• B grade

  Metrolink

  Overall 80.3 out of 100 · checked 2026-06-16

• F grade

  Modesto Area Express

  Overall 31.6 out of 100 · checked 2026-06-16

• F grade

  Montebello Bus Lines

  Overall 46.4 out of 100 · checked 2026-06-16

• B grade

  Moorpark City Transit

  Overall 80.2 out of 100 · checked 2026-06-16

• C grade

  Morongo Basin Transit Authority

  Overall 77.5 out of 100 · checked 2026-06-16

• D grade

  Mountain Transit

  Overall 60.1 out of 100 · checked 2026-06-16

• B grade

  Mountain View Community Shuttle

  Overall 84.5 out of 100 · checked 2026-06-16

• C grade

  Move Stanislaus

  Overall 75.7 out of 100 · checked 2026-06-16

• B grade

  Needles Area Transit

  Overall 80.2 out of 100 · checked 2026-06-16

• D grade

  Nevada County Connects (Gold Country Stage)

  Overall 61.4 out of 100 · checked 2026-06-16

• F grade

  Norwalk Transit System (NTS)

  Overall 22.7 out of 100 · checked 2026-06-16

• B grade

  Palo Verde Valley Transit Agency

  Overall 81.0 out of 100 · checked 2026-06-16

• D grade

  Palos Verdes Peninsula Transit Authority (PVPTA)

  Overall 67.8 out of 100 · checked 2026-06-16

• B grade

  Pasadena Transit

  Overall 81.3 out of 100 · checked 2026-06-16

• F grade

  Petaluma Transit

  Overall 48.1 out of 100 · checked 2026-06-16

• C grade

  Placer County

  Overall 75.8 out of 100 · checked 2026-06-16

• B grade

  Placer County Transit

  Overall 80.5 out of 100 · checked 2026-06-16

• B grade

  Plumas Transit

  Overall 82.0 out of 100 · checked 2026-06-16

• F grade

  Porterville Transit

  Overall 36.5 out of 100 · checked 2026-06-16

• F grade

  Redding Area Bus Authority

  Overall 57.0 out of 100 · checked 2026-06-16

• F grade

  Redding Area Bus Authority (RABA)

  Overall 26.4 out of 100 · checked 2026-06-16

• F grade

  Reds Meadow Shuttle

  Overall 50.7 out of 100 · checked 2026-06-16

• F grade

  Redwood Coast Transit (RCT)

  Overall 55.5 out of 100 · checked 2026-06-16

• F grade

  reLAXsan

  Overall 54.4 out of 100 · checked 2026-06-16

• F grade

  Ridgecrest Transit

  Overall 52.3 out of 100 · checked 2026-06-16

• F grade

  Ridgerunner

  Overall 19.5 out of 100 · checked 2026-06-16

• F grade

  Rio Vista Delta Breeze

  Overall 52.0 out of 100 · checked 2026-06-16

• F grade

  Rosemead Explorer

  Overall 57.2 out of 100 · checked 2026-06-16

• D grade

  Roseville Transit

  Overall 67.5 out of 100 · checked 2026-06-16

• B grade

  Sage Stage

  Overall 86.0 out of 100 · checked 2026-06-16

• F grade

  San Benito County Express (SBCE)

  Overall 50.4 out of 100 · checked 2026-06-16

• B grade

  San Joaquin Regional Transit District

  Overall 80.2 out of 100 · checked 2026-06-16

• F grade

  San Juan Capistrano Free Weekend Trolley

  Overall 46.4 out of 100 · checked 2026-06-16

• F grade

  San Leandro Links

  Overall 44.5 out of 100 · checked 2026-06-16

• B grade

  San Luis Obispo Regional Transit Authority (SLORTA)

  Overall 81.7 out of 100 · checked 2026-06-16

• A grade

  Santa Barbara Metropolitan Transit District (MTD)

  Overall 96.5 out of 100 · checked 2026-06-16

• F grade

  Santa Clarita Transit

  Overall 26.2 out of 100 · checked 2026-06-16

• F grade

  Santa Maria Area Transit

  Overall 33.6 out of 100 · checked 2026-06-16

• F grade

  Santa Rosa CityBus

  Overall 39.6 out of 100 · checked 2026-06-16

• A grade

  Santa Ynez Valley Transit

  Overall 94.6 out of 100 · checked 2026-06-16

• F grade

  Sierra Madre Gateway Coach

  Overall 48.5 out of 100 · checked 2026-06-16

• F grade

  Simi Valley Transit

  Overall 56.6 out of 100 · checked 2026-06-16

• B grade

  Siskiyou County

  Overall 83.2 out of 100 · checked 2026-06-16

• A grade

  SolTrans (Solano County Transit)

  Overall 94.1 out of 100 · checked 2026-06-17

• F grade

  Sonoma County Airport Express

  Overall 49.4 out of 100 · checked 2026-06-16

• F grade

  Sonoma County Transit (SCT)

  Overall 59.3 out of 100 · checked 2026-06-16

• A grade

  Sonoma-Marin Area Rail Transit (SMART)

  Overall 98.9 out of 100 · checked 2026-06-16

• F grade

  South County Transit Link

  Overall 30.0 out of 100 · checked 2026-06-16

• F grade

  Spirit Bus

  Overall 52.3 out of 100 · checked 2026-06-16

• F grade

  Stanislaus Regional Transit (StaRT)

  Overall 47.6 out of 100 · checked 2026-06-16

• F grade

  Stanislaus Regional Transit Authority

  Overall 44.4 out of 100 · checked 2026-06-16

• F grade

  Stanislaus Regional Transit Authority (StanRTA)

  Overall 31.6 out of 100 · checked 2026-06-16

• F grade

  SunLine Transit Agency

  Overall 20.3 out of 100 · checked 2026-06-16

• F grade

  Taft Area Transit

  Overall 51.1 out of 100 · checked 2026-06-16

• F grade

  Tehama Rural Area Express (TRAX), Susanville Indian Rancheria Public Transportation Program

  Overall 51.4 out of 100 · checked 2026-06-16

• A grade

  The Santa Cruzer

  Overall 92.0 out of 100 · checked 2026-06-16

• F grade

  Thousand Oaks Transit

  Overall 52.9 out of 100 · checked 2026-06-16

• F grade

  Thousand Oaks Transit - Kanan Shuttle

  Overall 56.6 out of 100 · checked 2026-06-16

• F grade

  Trinity Transit

  Overall 53.7 out of 100 · checked 2026-06-16

• C grade

  Tulare County Area Transit (TCAT)

  Overall 73.8 out of 100 · checked 2026-06-16

• B grade

  Turlock Transit

  Overall 80.6 out of 100 · checked 2026-06-16

• F grade

  Union City Transit

  Overall 51.9 out of 100 · checked 2026-06-16

• B grade

  Unitrans (ASUCD / City of Davis)

  Overall 80.8 out of 100 · checked 2026-06-16

• F grade

  University of California Berkeley Shuttle (Bear Transit)

  Overall 45.1 out of 100 · checked 2026-06-16

• F grade

  Ventura County Transportation Commission

  Overall 45.8 out of 100 · checked 2026-06-16

• B grade

  VINE Transit

  Overall 87.8 out of 100 · checked 2026-06-16

• C grade

  WestCAT

  Overall 77.3 out of 100 · checked 2026-06-16

• B grade

  Yolobus (Yolo County Transportation District)

  Overall 80.1 out of 100 · checked 2026-06-16

• F grade

  Yosemite Area Regional Transportation System (YARTS)

  Overall 53.7 out of 100 · checked 2026-06-16

• C grade

  Yuba-Sutter Transit

  Overall 79.3 out of 100 · checked 2026-06-16