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1352 W. Olive Avenue
P.O. Box 12616
Fresno, CA 93778-2616
- (559) 488-4082
- (559) 444-2409
- 711 - TTY
General Caltrans FAQs
The California Department of Transportation (Caltrans) is responsible for the design, construction, maintenance, and operation of the California State Highway System, as well as that portion of the Interstate Highway System within the state’s boundaries. Alone and in partnership with Amtrak, Caltrans is also involved in the support of intercity passenger rail service in California and is a leader in promoting the use of alternative modes of transportation. In 1972, California Assembly Bill 69 established the current framework of Caltrans.
Caltrans crews do not build roads. Caltrans plans, develops, and maintains all its highway projects. However, all construction jobs are contracted out. Only some minor maintenance repairs are done by Caltrans crews.
Caltrans is responsible for only the freeway system; it does not have land-use authority. Caltrans cannot prevent local development.
A mixed-flow lane is a standard freeway lane where vehicles with any number of occupants can drive anytime.
A High Occupancy Vehicle (HOV) lane is a freeway lane that can be used only by vehicles with multiple occupants (2 or more) during certain times of the day and certain days of the week. Buses, motorcycles, and clean-air vehicles can also use this lane during these times. During all hours outside of the set hours, the lane is available for all vehicles, regardless of number of passengers.