Radar Detector Laws in the US and Canada
Radar detectors are legal in passenger vehicles in most of the United States. Virginia and Washington, D.C. ban them, a federal rule bans them in commercial motor vehicles, and they are not allowed on military bases. In Canada they are legal in British Columbia and Alberta and, in passenger vehicles, in Saskatchewan; the other provinces and the territories ban them. Below are the rules as of October 2026, each with a link to the law itself.
Last updated: October 2026
General information, not legal advice. Laws and their enforcement change, and local rules can differ. Check the current rules for every state and province on your route, and ask a lawyer if you are unsure.
The short answer
- US passenger cars: legal in 49 states; banned in Virginia and in Washington, D.C.
- Commercial vehicles: banned in interstate trucks and buses of 10,001 lbs or more by federal rule, with extra rules in New York, Illinois and Oklahoma.
- Military bases: not allowed on Department of Defense installations.
- Windshield: California and Minnesota limit what may be attached to the windshield, and radar detectors are not on the allowed list.
- Canada: legal in British Columbia and Alberta, and in passenger vehicles in Saskatchewan; banned in the other provinces and in the territories.
United States
No federal law bans radar detectors in passenger cars. Virginia and Washington, D.C. ban them for every driver, a federal rule bans them in commercial motor vehicles, and New York, Illinois and Oklahoma add their own rules for heavy or commercial vehicles.
| Where | Radar detectors | What the rule says | Law |
|---|---|---|---|
| All other states | Legal | No state law against radar detectors in passenger vehicles. The windshield rules below still apply. | |
| Virginia | Banned | Using a radar detector, driving a vehicle equipped with one and selling one in Virginia are illegal. The ban does not apply to a detector that has no power source and is not within easy reach. Fine up to $250; the detector can be held as evidence. | Va. Code § 46.2-1079 |
| Washington, D.C. | Banned | Using or possessing a radar detector in an automobile in the District is not allowed, and neither is selling one. | 18 DCMR § 736 |
| Commercial vehicles, every state (federal rule) | Banned | A driver may not use a radar detector in a commercial motor vehicle or drive one that has a detector in it, and a carrier may not require or allow it. This covers vehicles in interstate commerce with a weight rating of 10,001 lbs or more, vehicles that carry more than 8 passengers for pay or more than 15 without pay, and vehicles carrying placarded hazardous materials. | 49 CFR 392.71 49 CFR 390.5T (definitions) |
| New York | Not in heavy vehicles | No use in vehicles with a gross vehicle weight rating over 18,000 lbs, or in commercial vehicles over 10,000 lbs. A detector that is plugged in and working is presumed to be in use. Fine $25–$100. | N.Y. Veh. & Traf. Law § 397-a |
| Illinois | Not in commercial vehicles | No radar detector in a commercial motor vehicle (26,001 lbs or more, 16 or more passengers, or hazardous materials), unless it is in a locked opaque box, or outside the passenger compartment and switched off. Fine from $50. | 625 ILCS 5/12-714 |
| Oklahoma | Not in commercial vehicles | No possessing, using or installing a radar detector in a commercial motor vehicle. | 47 O.S. § 11-808.1 |
| Military bases | Not allowed | Radar detectors may not be used on Department of Defense installations. | DoD Instruction 6055.04 (2021) |
Many states also apply the federal commercial vehicle rules to trucks and buses that only drive within the state. If you drive for work, ask your carrier or employer about its rules.
Mounting a detector on the windshield
Some states limit what may be attached to the windshield. In California (Vehicle Code § 26708) and Minnesota (Statutes § 169.71), the devices the law allows on or in front of the windshield, such as GPS units and toll transponders, do not include radar detectors. In those states, do not mount the detector on the windshield: place it where it does not block your view, or choose a custom-installed system such as the GENEVO PRO II, which puts nothing on the glass.
In every state, mount a radar detector so that it does not block your view of the road.
Canada
Canada has no federal rule on radar detectors: each province and territory decides. Several provinces and territories also ban selling them.
| Province or territory | Radar detectors | What the rule says | Law |
|---|---|---|---|
| British Columbia | Legal | No provincial rule against radar detectors, including in commercial vehicles. | |
| Alberta | Legal | No provincial rule against radar detectors, including in commercial vehicles. | |
| Saskatchewan | Legal in passenger vehicles | Not allowed in commercial vehicles of the classes set by regulation, switched on or off, unless the detector is out of the driver's reach or sealed in the maker's package. 3 demerit points; the device can be seized. | Traffic Safety Act, ss. 242–243 |
| Manitoba | Banned | No driving with, installing or possessing a radar detector in a motor vehicle. Fine up to $2,000; the device can be seized and confiscated. | Highway Traffic Act, s. 203 |
| Ontario | Banned | No driving with a radar detector in or on the vehicle, and no retail sale. Fine $100–$1,000 and 3 demerit points; the device can be seized and is forfeited on conviction. | Highway Traffic Act, s. 79 |
| Quebec | Banned | No installing or placing a radar detector in a road vehicle and no driving a vehicle that contains one; selling and renting are banned too. The device can be seized. | Highway Safety Code, arts. 251–253 and 333 |
| New Brunswick | Banned | No driving or being in control of a vehicle that has a radar detector in it. The device can be seized and forfeited. | Motor Vehicle Act, s. 143.1 |
| Nova Scotia | Banned | Driving with a radar detector in the vehicle was banned under the Motor Vehicle Act (s. 182A). The new Traffic Safety Act replaced that Act on October 19, 2026; check its current wording before you drive. | Traffic safety legislation changes |
| Prince Edward Island | Banned | No driving with a radar detector and no retail sale. It is a defence that the detector was disconnected and kept in the trunk or in a locked container other than the glovebox. Fine $100–$500; the device can be seized and forfeited. | Highway Traffic Act, s. 135 |
| Newfoundland and Labrador | Banned | No driving or being in control of a vehicle with a radar detector in it, and no selling one without the minister's approval. Fine $100–$300 for a first offence; the device can be seized and forfeited. | Highway Traffic Act, s. 176 |
| Yukon | Banned | Radar detectors are banned under the Motor Vehicles Act (s. 133). Yukon passed a new Traffic Safety Act in 2024; check the current rule before you drive. | Motor Vehicles Act, s. 133 |
| Northwest Territories | Banned | No installing a radar detector in a motor vehicle, and no buying, selling, possessing or making one. The device can be seized and forfeited. | Motor Vehicles Act, s. 144 |
| Nunavut | Likely banned | Nunavut kept the Northwest Territories Motor Vehicles Act when it was created in 1999, and that Act bans radar detectors. We could not confirm the current text; check before you drive. | Nunavut legislation |
Using a radar detector responsibly
A radar detector tells you that speed enforcement radar is in use nearby; it does not make speeding legal, and it does not change the speed limit. GENEVO radar detectors are receivers: they warn you about radar signals and do not interfere with them. Drive at a safe speed, follow the posted limits, and leave the detector at home when you drive where it is not allowed.
More from GENEVO
- Compare the GENEVO MAX, PRO II and PRO II DUO
- Radar detector FAQ for US and Canadian drivers
- Terms of sale: legal use
Sources
- Virginia: Va. Code § 46.2-1079
- Washington, D.C.: 18 DCMR § 736
- Commercial vehicles, every state (federal rule): 49 CFR 392.71
- Commercial vehicles, every state (federal rule): 49 CFR 390.5T (definitions)
- New York: N.Y. Veh. & Traf. Law § 397-a
- Illinois: 625 ILCS 5/12-714
- Oklahoma: 47 O.S. § 11-808.1
- Military bases: DoD Instruction 6055.04 (2021)
- Saskatchewan: Traffic Safety Act, ss. 242–243
- Manitoba: Highway Traffic Act, s. 203
- Ontario: Highway Traffic Act, s. 79
- Quebec: Highway Safety Code, arts. 251–253 and 333
- New Brunswick: Motor Vehicle Act, s. 143.1
- Nova Scotia: Traffic safety legislation changes
- Prince Edward Island: Highway Traffic Act, s. 135
- Newfoundland and Labrador: Highway Traffic Act, s. 176
- Yukon: Motor Vehicles Act, s. 133
- Northwest Territories: Motor Vehicles Act, s. 144
- Nunavut: Nunavut legislation
- California: Cal. Veh. Code § 26708
- Minnesota: Minn. Stat. § 169.71
Compiled by GENEVO America from the laws listed above, October 2026. Questions: support.us@genevo.com or +1 (844) 436-3861.