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Police Radar Detector Illegal: What Drivers Should Know

Radar detector rules depend on where and what you drive. Virginia restricts their use on its highways, and federal rules apply to commercial motor vehicles.

The phrase police radar detector illegal raises a jurisdiction question: the answer can change with the state and the vehicle. Virginia law prohibits operating a vehicle equipped with a detector on Commonwealth highways, and federal regulation bars detectors in commercial motor vehicles. Check current official rules for the specific route and vehicle.

Police Radar Detector Illegal: What Drivers Should Know

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Common questions

Questions before you buy

Where are police radar detectors illegal?

Virginia has a specific prohibition for vehicles on its highways, and federal rules prohibit detectors in commercial motor vehicles. Check current state and local law for other destinations.

Are radar detectors illegal in commercial vehicles?

Yes. Federal regulation 49 CFR 392.71 prohibits using or carrying a radar detector in a commercial motor vehicle.

Is a police radar detector the same as a jammer?

No. A detector receives a signal; a jammer is designed to interfere with enforcement measurements and is subject to separate federal restrictions.

Can a detector be legal in one state and restricted in another?

Yes. Check official rules for each jurisdiction on your route before operating a detector.