Are radar detectors legal in Maryland?
Last updated August 2026 · McFlash editorial team
Radar detectors are legal in privately-owned passenger vehicles in Maryland. Standard windshield or dashboard mounting is permitted.
Legal in Maryland
Privately-owned passenger vehicles registered or driven in Maryland may use a radar detector.
Maryland rules at a glance
- Passenger vehicles: permitted.
- Commercial vehicles over 10,000 lbs GVWR: prohibited under federal FMCSA rules.
- US military installations: prohibited.
- Windshield or dashboard mounting is permitted.
- Laser jammers are a separate category and are more heavily restricted than detectors.
Choosing a detector for Maryland roads
Look for Ka-band sensitivity (the band most state patrols use), 360-degree coverage so instant-on radar behind you is caught, and a city filter to suppress false alerts in urban traffic. The McFlash 360 covers all three and installs without tools, which matters if you move it between vehicles.
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