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Is a Radar Detector Illegal in California?

California generally permits ordinary radar detectors in passenger vehicles; radar jammers are a separate matter. Check current state and federal rules.

If you are asking whether a radar detector is illegal in California, distinguish a receiver that detects police radar from equipment intended to jam enforcement signals. California Vehicle Code section 28150 addresses devices designed to interfere with speed-measuring equipment; federal law also restricts radio-frequency jamming. Commercial drivers should check additional rules. Read the exact device description and current statutes before installation. A detector does not make speeding lawful or guarantee an alert before a measurement.

Is a Radar Detector Illegal in California?

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Questions before you buy

Are radar detectors legal in California for cars?

Ordinary receive-only radar detectors are generally legal for passenger cars under California law. This does not authorize radar jammers, and other rules may apply to commercial vehicles.

Are radar jammers legal in California?

California Vehicle Code section 28150 restricts devices designed to interfere with radar or laser speed-measuring equipment. Check the current statute.

Can commercial vehicles use radar detectors in California?

Commercial vehicle rules may differ, including federal restrictions for certain classes. Verify federal regulations and employer policy.

Does a radar detector make speeding legal?

No. It does not change speed limits or prevent a citation. Follow posted limits and drive safely.