Colorado ATV laws require every machine ridden on public land to carry a current state OHV registration or a non-resident permit, meet minimum equipment standards, and follow the age and operator rules set by the state and by whatever county or federal land you’re riding on. The state uses “off-highway vehicle” (OHV) as the umbrella term, so the same rules apply to ATVs, dirt bikes, side-by-sides, and UTVs.
Registration and Permits
Any OHV on public land, a designated trail, or even a staging area must carry a current Colorado registration or a Colorado OHV permit. Registration runs April 1 through March 31 and costs $26.25, which includes a $1.25 search-and-rescue surcharge. First-time registrants submit proof of ownership with the application and receive two decals and a registration card.1Colorado Parks and Wildlife. Register an Off-Highway Vehicle
Out-of-state riders skip registration but must buy a non-resident OHV permit before riding.2colorado.gov. Purchase a Colorado Non-Resident Off-Highway Vehicle Permit Online Non-resident permits follow the same April-to-March cycle and must be displayed on the vehicle or carried on the rider.1Colorado Parks and Wildlife. Register an Off-Highway Vehicle Permits are sold through the CPW website, CPW offices, and authorized retail vendors. If you already own a street-legal plated vehicle like a Jeep or truck and want to run it on OHV trails, you still need a separate Colorado OHV permit for that vehicle.
Equipment Your ATV Must Have
Colorado sets mechanical minimums every OHV has to meet before it goes on public land, and rangers check them during trail patrols.
- Brakes operable by hand or foot that can decelerate the vehicle at 14 feet per second on level ground at 20 mph.3Colorado Secretary of State. 2 CCR 405-5 – Chapter P-5 Off-Highway Vehicle Regulations
- A properly maintained muffler. Noise levels must meet the standards in C.R.S. 25-12-110, Colorado’s noise abatement statute. Aftermarket exhausts that push past the legal limit draw citations.3Colorado Secretary of State. 2 CCR 405-5 – Chapter P-5 Off-Highway Vehicle Regulations
- A U.S. Forest Service-approved spark arrestor in working order, marked “qualified” or “approved.” Given Colorado’s wildfire risk, enforcement takes this one seriously.3Colorado Secretary of State. 2 CCR 405-5 – Chapter P-5 Off-Highway Vehicle Regulations
- Between sunset and sunrise, at least one headlamp bright enough to illuminate objects 100 feet ahead and one red tail lamp visible from 500 feet behind.3Colorado Secretary of State. 2 CCR 405-5 – Chapter P-5 Off-Highway Vehicle Regulations
Who Can Ride, and at What Age
Colorado does not require a driver’s license to operate an OHV on designated backcountry trails. The state uses age tiers instead. Children ages 10 through 15 can ride on public land only under the direct supervision of a licensed driver. Riders 16 and older can operate on their own. Children under 10 are not permitted to operate OHVs on public land at all.
Those are state minimums. Many counties require a valid driver’s license for every operator on their roads, which effectively lifts the minimum to 16 wherever those ordinances apply. Parents are legally responsible for a minor’s actions and can be cited themselves if a child is riding without the required supervision.
Where You Can Legally Ride
On federal land, motorized travel is restricted to routes specifically designated for OHV use. The U.S. Forest Service publishes Motor Vehicle Use Maps (MVUMs) for each national forest, and those maps are the legal authority showing which trails are open, what vehicle types are allowed, and when seasonal closures apply. Riding off a designated route or taking a motorized vehicle into a wilderness area is a federal violation. The Bureau of Land Management also designates specific routes and areas as open, limited, or closed to motorized use on BLM land.
On state land, Colorado Parks and Wildlife manages OHV access through designated trail systems. State wildlife areas and state trust lands have separate access rules and are generally not open to recreational OHV riding.
County Roads
Colorado law generally prohibits operating an OHV on public streets, roads, and highways, but the same statute lets local counties and municipalities pass ordinances opening specific city streets or county roads to OHV traffic.4Justia. Colorado Code 33-14.5-108 – Off-Highway Vehicle Operation Prohibited on Streets, Roads, and Highways No road in the state highway system can be designated as an OHV route. Riders may cross a paved road or highway at a right angle to connect trails and may traverse bridges and culverts.
Extra Rules Counties Can Add
Local governments have broad authority to layer requirements on top of state law. A county or municipal ordinance can require any of the following for OHV operation inside its jurisdiction:5Colorado General Assembly. Off-Highway Vehicles
- A valid driver’s license for all operators.
- Liability insurance. Colorado has no statewide OHV insurance mandate, but individual counties can require it.
- Helmets for riders 18 and younger.
- Eye protection, including goggles, sunglasses, or prescription glasses.
- Seatbelts and child restraints in side-by-sides and UTVs that come equipped with them.
- Occupant limits on the number of riders in or on a vehicle.
Because the requirements can differ sharply between neighboring counties, a rider crossing jurisdictions on a single trip may hit different rules along the way. Check the specific county’s ordinance before you ride.
DUI and Yielding on the Trail
Colorado’s DUI statute applies to all vehicles, not just cars and trucks. Operating an OHV while under the influence of alcohol or drugs carries the same consequences as a DUI on a highway, including arrest, fines, and potential loss of standard driving privileges.6Justia. Colorado Code 42-4-1301 – Driving Under the Influence – Driving While Impaired – Driving With Excessive Alcoholic Content – Definitions – Penalties The statute distinguishes “driving under the influence” from the lesser “driving while ability impaired,” but both are criminal offenses. CPW rangers and county sheriffs patrol OHV areas and conduct sobriety checks even on remote trails.
Trail etiquette carries legal weight too. OHV riders must yield the right-of-way to non-motorized users, including hikers and people on horseback. When you meet horses, shut off your engine and wait for them to pass.
Reporting an Accident
An OHV accident that causes at least $1,500 in property damage, an injury requiring hospitalization, or a death must be reported within 48 hours.7Colorado Parks and Wildlife. Off-Highway Vehicle and Snowmobile Registrations and Permits The report goes to both a law enforcement agency (Colorado State Patrol, the county sheriff, or the local police department where it occurred) and to Colorado Parks and Wildlife, which requires a separate OHV/Snowmobile Accident Reporting Form submitted to its OHV/Snowmobile Program Manager.
Failing to report a qualifying accident is a class 2 petty offense carrying a $75 fine.7Colorado Parks and Wildlife. Off-Highway Vehicle and Snowmobile Registrations and Permits The fine is modest, but a missed report can create larger problems if injuries worsen or a liability dispute develops later. If you’re unsure whether damage hits the $1,500 threshold, file the report.