Illinois Radar Detector Laws: Detectors, Jammers and Vehicles

The cited Illinois provision, 625 ILCS 5/12-613, concerns radar or laser jamming devices rather than a general ban on passive detection. Other rules, including federal commercial-vehicle restrictions, may apply.

Section 12-613 generally prohibits operating or being in actual physical control of a motor vehicle equipped with a covered jamming instrument, with a limited exception described in the statute.

The cited provision specifically addresses devices designed to interfere with police radar or laser measurements. A detector receives signals; read the statute’s definitions and current law for the device in question.

Federal rules prohibit using a detector in a commercial motor vehicle or operating one equipped with a detector. That rule applies independently of the state provision cited here.