San Francisco Municipal Railway
- Provides bus, streetcar, and metro service in the city of San Francisco, California. Includes schedules, station information, route maps, and fare information.
- http://www.sfmuni.com/

Norwalk Transit System
- Offers information on routes, schedules, and fares.
- http://www.ci.norwalk.ca.us/transportation.asp

Los Angeles Department of Transportation
- Official site includes commuter information, schedule, and park and ride information.
- http://www.ladottransit.com/

Montebello Bus Lines
- Official site with schedules, route maps, and fare information.
- http://www.cityofmontebello.com/departments/TRANSIT/busline.htm

South County Area Transit
- Serving the Five-Cities in the southern portion of San Luis Obispo, California. Includes schedules, route, and fare information.
- http://www.scattransit.org/

Bay Area Rapid Transit
- Provides regional rail service in the San Francisco Bay Area. Includes schedule, fare, and route information, as well as service advisories.
- http://www.bart.gov/

Alameda Corridor Transportation Authority
- A 20-mile railroad expressline that connects the port of Long Beach and Los Angeles to the transcontinental rail network east of downtown Los Angeles. Employment and construction information available, including pictures.
- http://www.acta.org/

Santa Cruz Metro
- Bus service for Santa Cruz County, California. Includes route maps, schedules, employment information, and facts about the system.
- http://www.scmtd.com/

Santa Clara Valley Transportation Authority
- Bus and light rail service to the San Jose metropolitan area of California. Includes schedules, route maps, and fare information for bus and light rail services. Also includes station information for each light rail station.
- http://www.vta.org/

Alameda - Contra Costa Transit District
- Provides bus service. Includes schedules, fares, and routes.
- http://www.actransit.org/

Sacramento Regional Transit
- Bus and light rail for Sacramento, California. Includes schedule, fare, and route information.
- http://www.sacrt.com/

Riverside Transit Agency
- Bus service for Riverside County, California. Includes schedule, fare, route, and advisory information.
- http://www.rrta.com/

Metrolink
- Regional rail service for the Los Angeles, California metropolitan area. Includes station information, route maps, schedules, and fare information.
- http://www.metrolinktrains.com/

Orange County Transportation Authority
- Bus service for Orange County, California. Includes schedules, fares, and route information.
- http://www.octa.net/

Los Angeles County Metropolitan Transportation Authority
- The major operator of bus and rail service in Los Angeles County, California. Includes schedule, fare, and route information. Also offers service advisories.
- http://www.mta.net/

Foothill Transit
- Transit service for the eastern San Gabriel Valley, California; including express buses to Los Angeles and Pasadena. Includes schedule, fare, and route information.
- http://www.foothilltransit.org/

Golden Empire Transit
- Public transportation for Bakersfield, California. Includes route, schedule, fare, and policy information.
- http://www.getbus.org/

Big Blue Bus
- Provides bus service to Santa Monica and the west side of Los Angeles, California. Includes route, fare, and schedule information.
- http://www.bigbluebus.com/

Antelope Valley Transit Authority
- Bus service for Northern Los Angeles County, California. Includes route, fare, and schedule information.
- http://www.avta.com/

San Diego Metropolitan Transit System
- Information on bus and rail service for San Diego County, California. Offers an interactive trip planner, route maps, schedules, contact information, news, and advisories.
- http://www.sdcommute.com/

San Francisco Bay Area Transit Information Project
- Information includes current schedules, transit fares, maps, ferry service, shuttles, bicycle, airport service, and frequently asked questions.
- http://www.transitinfo.org/