Is a Radar Detector Legal in PA? Pennsylvania Rules

Pennsylvania law prohibits radar-detection devices in commercial vehicles covered by 75 Pa.C.S. § 4108. For a passenger car, check the current statute and any separate mounting restrictions that apply to your situation.

Section 4108 restricts radar-detection devices in specified commercial vehicles, and federal motor-carrier regulations may also apply. Verify the vehicle classification and the current state and federal wording before use.

The cited Pennsylvania provision targets specified commercial vehicles rather than describing a universal ban for all passenger cars. This is general information; consult the current code for your exact circumstances.

Windshield obstruction rules are distinct from detector-possession rules. Check the current vehicle code and choose a mounting position that does not obstruct the driver’s view.