Radar Detector Laws by State: A Source-First Guide

Use each state legislature’s official code or a state agency’s legal guidance, then verify the current text and effective date.

Federal regulation addresses radar-detector use in commercial motor vehicles. Its definitions and application should be checked directly.

Check the rules where the vehicle is being driven, including any state-specific equipment and mounting provisions.

Treat summaries as pointers. The official statute or regulation is the controlling source and should be reviewed for updates.