California Department of Transportation - Caltrans is the state agency responsible for highway, bridge, and rail transportation planning, construction, and maintenance. Friends of Southern California's Highways - A community grass-roots organization dedicated to the rebuilding and expansion of the regional freeway and thoroughfare system. In Our Path - Describes the process of the construction of I-105 (Century Freeway) near Los Angeles. Transportation Corridor Agencies - Builds and manages toll roads in Orange County. Includes toll and transponder information, proposed extensions, and discounts. California Highway Patrol Traffic Incident Information - Live traffic incident information from the CHP computer system. SigAlert.com - Includes live freeway speed maps and traffic incident summaries for many locations around the state. ReBuild California - Labor/contractor group advocating increased public investment in state infrastructure, including mass transit and highways. California Highways - Gives detailed history and other information on county, state, U.S. and Interstate facilities in the state. Includes links to pages within the cahighways.org domain. Casey's Roads and Highways Page - Covers many aspects, including Historic U.S. highways and the unusually-numbered I-238. California Motorcycle Roads - Descriptions of scenic and challenging backroads. 91 Express Lanes - Information on the toll roadways on the Riverside Freeway (State Route 91) in metro Los Angeles. Advanced Highway Maintenance and Construction Technology Research Center - UC Davis and Caltrans highway research center. Historic Highways of Southern and Central California - Examines the area's highway past, present and future. Unofficial Road Information For Highway 1, Big Sur - Information about old closures of SR 1 (Pacific Coast Highway) at Big Sur due to a landslide. The Ridge Route Preservation Organization - Maps, photos and history of the pioneer highway between Bakersfield and Los Angeles. Floodgap Roadgap - Documents unusual and former routings in the southern part of the state. Includes photographs. South Bay Expressway - Automated FasTrak toll road in San Diego to open Fall 2006 that will service Chula Vista, Bonita, and Otay Mesa, connecting SR-54 to the Mexico border as part of SR-125. News and project overview. DLK's Highway Page - Several freeway plans for the San Francisco Bay Area and California highway signs. FasTrak - This electronic toll collection system lets drivers electronically pay tolls on California's bridges and toll roads without stopping.