| 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. |
| California Bicycle Coalition: State-level bicycle advocacy |
| California Commuters Alliance (CCA): Advocacy organization of auto commuters. Site provides congestion and transportation infrastructure statistics, Pothole Hall of Fame, audio of radio advertisements, and FAQ. |
| 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. |
| California Driving -- A Survival Guide: An illustrated survival guide for tourists, travelers, and recent immigrants containing information, tips, and warnings, about driving in California. |
| California High Speed Rail Authority: state agency planning future high speed rail network |
| California Highway Patrol Traffic Incident Information: Live traffic incident information for California. |
| 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. |
| California Transit Association: Advocacy group in support of public transportation systems. Conferences, events, job postings, magazine, membership information, and links to related organizations. |
| 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. |
| California Trolleys: Picture gallery of historic trolley lines and equipment in California. Links to historical and current trolley related sites. |
| David Levinson's High Speed Rail Fact Sheet: Argues against the proposed California High Speed Rail system. |
| Highway Conditions in California: Current highway conditions for all California highways, provided by Caltrans. |
| Hire Air: Charter flights to/from Central Valley airports. |
| MyJets Corporation: Provides weekly charter flights on set routes in California, based on Fractional Seat Ownership model. |
| 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. |
| 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. |
| Smart Traveler: Transportation options in California, from bike routes to airports. Maintained by CalTrans. |
| Surface Transportation Policy Project California: Advocates mass transit, bicycle and pedestrian projects, and compact development |
| 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. |
| Train Riders Association of California (TRAC): Non-profit organization dedicated to expansion and improvement of passenger rail service. |
| VPSI Commuter Vanpools: Serving commuters in more than 60 urban areas across the U.S, including all of California's major metro areas. |
| Western Transit: Monthly publication about bus & rail transportation in the Western US, focusing on California. Also PUC, Roster of the Month and Equipment Report. |
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