Traffic Advisory News Network
- Provides real time traffic congestion maps for California and other US cities. Includes tips, alerts, commuter support, and WiFi hot spots.
- http://traffic.tann.net/

California Trolleys
- Picture gallery of historic trolley lines and equipment in California. Links to historical and current trolley related sites.
- http://users.snowcrest.net/marnells/trolleys.htm

Sigalert! Freeway Traffic Advisories
- History and development of the "SigAlert" traffic advisory system, by Loyd Sigmon of KMPC, first used LAPD and later, the CHP.
- http://users.snowcrest.net/marnells/sigalert.htm

Beat The Traffic: The Right Traffic, at the Right Time
- Interactive traffic maps and accident reports, including highway speed and incident information for five major California metropolitan areas.
- http://www.beatthetraffic.com

California Transit Association
- Advocacy group in support of public transportation systems. Conferences, events, job postings, magazine, membership information, and links to related organizations.
- http://www.caltransit.org

Hire Air
- Charter flights to/from Central Valley airports.
- http://www.hireair.com

VPSI Commuter Vanpools
- Serving commuters in more than 60 urban areas across the U.S, including all of California's major metro areas.
- http://www.vpsiinc.com/

MyJets Corporation
- Provides weekly charter flights on set routes in California, based on Fractional Seat Ownership model.
- http://www.myjets.net

Smart Traveler
- Transportation options in California, from bike routes to airports. Maintained by CalTrans.
- http://caltrans511.dot.ca.gov/

Train Riders Association of California (TRAC)
- Non-profit organization dedicated to expansion and improvement of passenger rail service.
- http://www.calrailnews.com

SigAlert.com - Live Traffic Updates
- Live freeway speed maps and traffic incident summaries over the web and your wireless phone. Personalized traffic alerts sent to wireless phone, and pager.
- http://www.sigalert.com/

Surface Transportation Policy Project California
- Advocates mass transit, bicycle and pedestrian projects, and compact development
- http://www.transact.org/Ca/

Western Transit
- Monthly publication about bus & rail transportation in the Western US, focusing on California. Also PUC, Roster of the Month and Equipment Report.
- http://www.western-transit.com

California Highway Patrol Traffic Incident Information
- Live traffic incident information for California.
- http://cad.chp.ca.gov/

California State Automobile Association
- CSAA is the American Automobile Association's Northern and Central California, Utah, and Nevada affiliate providing emergency roadside service, automotive services, travel services, and insurance services.
- http://www.csaa.com/

David Levinson's High Speed Rail Fact Sheet
- Argues against the proposed California High Speed Rail system.
- http://www.ce.umn.edu/~levinson/HSR.html

California Transit Publications
- Publishers of _California by Train, Bus and Ferry_, a guidebook on public transportation in California, also offer schedule and website design for transit agencies.
- http://www.catransit.com

California Driving -- A Survival Guide
- An illustrated survival guide for tourists, travelers, and recent immigrants containing information, tips, and warnings, about driving in California.
- http://www.caldrive.com/

California High Speed Rail Authority
- state agency planning future high speed rail network
- http://www.cahighspeedrail.ca.gov

Highway Conditions in California
- Current highway conditions for all California highways, provided by Caltrans.
- http://www.dot.ca.gov/hq/roadinfo/

California Department of Transportation (Caltrans)
- Information and news about transportation in California. Includes highway conditions, maps, live traffic videos, links to regional weather reports, and construction and highway design manuals.
- http://www.dot.ca.gov/

California Bicycle Coalition
- State-level bicycle advocacy
- http://www.calbike.org/