State highways in California
| California State Highway System | |
|---|---|
Standard route signage in California for (from left-to-right) an Interstate Highway, a U.S. Highway, and a State Route | |
| System information | |
| Notes | All classes of state-numbered highways are generally state-maintained. |
| Highway names | |
| Interstates | Interstate X (I-X) |
| US Highways | U.S. Route X (US X) |
| State | State Route X (SR X) |
| System links | |
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The state highway system of the U.S. state of California is a network of highways that are owned and maintained by the California Department of Transportation (Caltrans).
Each highway is assigned a Route (officially State Highway Route) number in the Streets and Highways Code (Sections 300–635). Most of these are numbered in a statewide system, and are known as State Route X (abbreviated SR X). United States Numbered Highways are labeled US X, and Interstate Highways are Interstate X. Under the code, the state assigns a unique Route X to each highway, and does not differentiate between state, US, or Interstate highways.
The California Highway Patrol (CHP) is tasked with patrolling all state highways to enforce traffic laws.