Pennsylvania Radar Detector Laws: Vehicle Rules and Exceptions

75 Pa.C.S. § 4108 prohibits radar-detection devices in commercial vehicles within the statute’s scope. Consult the current definitions and exceptions before using one in a work vehicle.

The cited restriction is written for specified commercial vehicles, rather than as a general prohibition for every passenger car. Other laws, including rules about obstructed views, can still apply.

Section 3368 addresses speed-timing devices used to measure vehicle speed. It is distinct from § 4108, the provision that addresses radar-detection devices in certain vehicles.

Do not assume a detector is permitted in a commercial truck. Check Pennsylvania’s vehicle classification rules and federal motor-carrier regulation 49 CFR § 392.71 for the specific operation.