California · Vehicle Code
VEH §21664: It is unlawful for the driver of any vehicle to enter or exit any freeway which has full control of access and no crossings at grade, except upon a designated on ramp with respect to entering the free
Infraction
What this law says, in plain English
Drivers must use designated on-ramps to enter controlled-access freeways and designated off-ramps to exit them.
Read the full statutory text
It is unlawful for the driver of any vehicle to enter or exit any freeway which has full control of access and no crossings at grade, except upon a designated on ramp with respect to entering the freeway or a designated off ramp with respect to exiting the freeway.
Verify at the official source: California legislative text
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This page is legal information, not legal advice. Code text is sourced from official publications and may lag amendments — always confirm at the official source linked above. Plain-English summaries and relationship data are AI-derived and reviewed on an ongoing basis; verify with a licensed attorney before acting.