Other equipment laws
Radar detector laws by state: where they are banned
Pick a state and a vehicle type: the tool says whether a radar detector is allowed and which rule applies. The sections below explain the two local bans and the federal rule for trucks.
Can you use a radar detector?
Radar detector in Virginia
Banned
| Rule applied | Va. Code § 46.2-1079 |
| Commercial trucks, nationwide | banned (49 CFR § 392.71) |
Radar detectors are legal in private cars in most of the United States. Of the 51 jurisdictions read for this site, 2 ban them in private vehicles: District of Columbia and Virginia. Virginia's statute, section 46.2-1079, bans operating a vehicle equipped with a radar or laser detector, using one and selling one, and treats the presence of a detector as prima facie evidence of a violation unless it has no power source and is not readily accessible to anyone in the vehicle. The District of Columbia regulates radar detectors and jammers in section 736 of title 18 of its municipal regulations. For the other 49 states, no state statute banning detectors was found. Commercial vehicles are a separate case everywhere: federal rule 49 CFR 392.71 forbids a driver to use a radar detector in a commercial motor vehicle, or to operate one that is equipped with or contains a detector, and the federal definition covers vehicles of 10,001 pounds or more used in interstate commerce, among others. This page covers detectors, which only receive signals; jammers and the rules on mounting devices on the windshield were not read for this site.
Can you use a radar detector?
Radar detector in Virginia
Banned
| Rule applied | Va. Code § 46.2-1079 |
| Commercial trucks, nationwide | banned (49 CFR § 392.71) |
Statutes read by Radif Partners · Editorial policy · How the check works
Where detectors are banned
| Jurisdiction | Private cars | Commercial vehicles | Rule |
|---|---|---|---|
| District of Columbia | banned | banned | 18 DCMR § 736 |
| Virginia | banned | banned | Va. Code § 46.2-1079 |
| The other 49 states | no state ban found | banned | 49 CFR 392.71 |
The states where no state ban was found are: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Washington, West Virginia, Wisconsin and Wyoming. In each of them, the federal rule still applies to commercial vehicles.
Virginia in detail
Virginia's rule is the broadest. Section 46.2-1079 covers three acts: operating a motor vehicle equipped with a radar or laser detection device, using one, and selling one. The presence of a device in a vehicle is prima facie evidence of a violation. The statute carves out a device that has no power source and is not readily accessible, which is why the advice for anyone crossing the state is to unplug the device and stow it out of reach. A violation is a traffic offense that carries no demerit points; the fine amount was not read for this site and is shown as not confirmed. Virginia is also one of the states read for this site where officers may not stop a car for window tint alone, a different rule covered on the Virginia tint page.
The District of Columbia
Section 736 of title 18 of the District of Columbia Municipal Regulations, titled "Radar detectors and jammers", sits in the chapter on motor vehicle equipment. Treat a detector as banned when driving in the District, including on a short trip across from Maryland or Virginia.
Commercial motor vehicles
The federal rule, 49 CFR 392.71, has two parts: no driver shall use a radar detector in a commercial motor vehicle or operate one that is equipped with or contains a detector, and no motor carrier shall require or permit a driver to do so. The definition of a commercial motor vehicle in 49 CFR 390.5 covers vehicles used on a highway in interstate commerce that have a weight rating or weight of 10,001 pounds or more, that are designed or used to carry more than 8 passengers including the driver for pay or more than 15 without pay, or that carry placarded hazardous material. Check a vehicle type here:
Can you use a radar detector?
Radar detector in Texas
Banned
| Rule applied | 49 CFR § 392.71 |
| Commercial trucks, nationwide | banned (49 CFR § 392.71) |
What this page does not cover
Three related questions fall outside the texts read for this site. First, jammers, which transmit rather than receive: the District's section title names them, but federal rules on jammers were not read here. Second, mounting: states limit what may be placed on a windshield, and those rules were not read state by state, so this page does not say where a detector may sit. Third, local rules on military bases or private roads. For tint on the windshield, the windshield guide gives each state's strip rule.
How the figures were read
For each state, the vehicle code was searched for a section on radar or laser detectors. Where none was found, the state is listed as "no state ban found" rather than "legal", because absence from the code is not a written permission. The federal rule was read in the Electronic Code of Federal Regulations as of October 1, 2026.