Motorcycle Accident Laws in Colorado (2026): Deadlines & Helmets

A motorcycle crash in Colorado is handled as a personal injury claim, but riders face a distinct set of questions: the deadline to sue, the state fault rule, the helmet law, whether failing to wear a helmet can be used against you, and whether lane filtering is allowed. Colorado's lane-filtering law is recent and time-limited, so it is worth getting right. This guide explains how Colorado answers each question. It is general legal information and attorney advertising, not legal advice, and reading it does not create an attorney-client relationship.

The deadline to sue in Colorado is three years

The statute of limitations is the legal deadline to file a lawsuit. In Colorado, a personal injury claim arising from a motor vehicle crash, which includes a motorcycle crash, generally must be filed within three years of the crash under Colorado Revised Statutes 13-80-101. That three-year window is longer than the two-year general injury deadline because Colorado sets a specific limit for claims arising from the use or operation of a motor vehicle. A wrongful death claim, brought when a rider is killed, carries a two-year deadline from the date of death under C.R.S. 13-80-102. Claims against a public entity require a written notice under the Colorado Governmental Immunity Act, often within 182 days, so the deadlines should be confirmed early. A court will normally dismiss a late case no matter how strong it is.

Fault rule: modified comparative negligence with a 50 percent bar

Colorado follows modified comparative negligence under Colorado Revised Statutes 13-21-111. A jury assigns each party a percentage of fault. If the injured rider's fault is less than 50 percent, the rider can recover, but the award is reduced by the rider's own percentage. If the rider is found 50 percent or more at fault, the rider recovers nothing. A rider found 20 percent at fault with 100,000 dollars in damages would recover 80,000 dollars, but a rider found 50 percent at fault would recover nothing.

This rule matters for riders because insurers sometimes try to push a motorcyclist's fault toward that 50 percent line, leaning on a bias that riders are reckless. Clear documentation that the rider was riding lawfully is one way that pressure is met.

No-fault and PIP: Colorado is an at-fault state

Colorado is not a no-fault state. It repealed its no-fault (PIP) system in 2003 and became a traditional at-fault, tort state effective in 2004. After a crash, an injured rider pursues the at-fault driver and that driver's liability insurer; there is no no-fault threshold to clear before suing. Some riders carry first-party medical payments coverage, and uninsured or underinsured motorist coverage can be important when the at-fault driver carries only minimum limits, but recovery runs through fault. Because motorcycle injuries are frequently severe, the at-fault driver's policy limits and the rider's own coverage often shape what is realistically recoverable.

Helmet law: required under 18

Colorado requires a DOT-compliant protective helmet only for motorcycle operators and passengers under 18 years of age under Colorado Revised Statutes 42-4-1502. Riders 18 and older may legally ride without a helmet. The rule applies to passengers too, so a 17-year-old passenger must wear a helmet even if the adult operator does not. Separately, under a different statute, C.R.S. 42-4-232, all riders and passengers must wear goggles or eyeglasses with safety-glass or plastic lenses unless they are wearing a helmet with built-in eye protection; a windshield-based exception exists only for three-wheeled autocycles with a top speed of 25 mph or less, not for standard two-wheeled motorcycles. Colorado is one of only a few states with no universal adult helmet requirement.

Can not wearing a helmet hurt your case (the helmet defense)

Because riding without a helmet is legal for adults in Colorado, the absence of a helmet does not automatically bar or reduce a claim, and it cannot be used to prove the rider caused the crash. Colorado courts have not uniformly embraced a broad helmet defense, but a defendant may argue under the comparative fault system that a missing helmet failed to mitigate head or brain injuries. If that argument is allowed, it reaches only injuries a helmet could have affected; injuries such as broken bones, spinal injuries, or road rash on the body are not reduced by it. The practical point is that helmet use can become part of a damages dispute even when wearing one was not legally required.

Lane filtering is legal in Colorado, with conditions and an expiration date

Colorado legalized motorcycle lane filtering effective August 7, 2024 under Senate Bill 24-079. Filtering means moving past stopped vehicles, and it is allowed only when specific conditions are met: the traffic must be stopped, the lanes must be wide enough to pass safely, the motorcycle must be traveling at 15 miles per hour or less, and conditions must permit prudent operation. A rider may not filter on the right shoulder, to the right of a vehicle in the farthest right-hand lane on a non-limited-access road, or into oncoming traffic. Importantly, this is lane filtering past stopped traffic, not the faster lane splitting between moving traffic that California allows. The authorization carries a sunset: SB24-079 is set to be repealed on September 1, 2027, after the Colorado Department of Transportation studies safety data, so riders should verify the law is still in effect before relying on it.

Damage caps and minimum insurance

Colorado, unlike most states, does cap certain damages. It limits noneconomic damages (such as pain and suffering) in personal injury cases by statute, with the cap amount adjusted periodically for inflation, though economic damages such as medical bills and lost wages are not capped in the same way and a court can sometimes exceed the noneconomic cap on clear and convincing evidence. Wrongful death and punitive damages have their own statutory limits. On insurance, Colorado requires minimum liability coverage of 25,000 dollars per person and 50,000 dollars per accident for bodily injury, plus 15,000 dollars for property damage (25/50/15). Those minimums are often far below the cost of a serious motorcycle injury, which is why underinsured-motorist coverage matters.

Why motorcycle cases are different

Motorcycle crashes tend to cause more serious injuries than car crashes because a rider has so little protection, which means higher medical bills and a more aggressive insurance defense. Riders also face the helmet and lane-filtering questions above, plus a documented bias against motorcyclists among some jurors and adjusters. The classic crash is a car turning left across an oncoming motorcycle, with the driver claiming they never saw the bike. All of this is why physical evidence and a clear record of the rider's lawful conduct carry real weight.

Evidence and how to evaluate your options

If you or a family member was hurt in a Colorado motorcycle crash, get medical care and keep the records, obtain the crash report, and photograph the scene, the bike, and your gear. Note the other driver's information and any witnesses. Then speak promptly with a licensed Colorado attorney, both because of the three-year deadline (and the shorter governmental-notice deadline where a public entity is involved) and because early evidence fades. Most motorcycle accident attorneys offer a free consultation and work on a contingency basis, meaning no upfront fee and payment only out of any recovery. No outcome or amount can be promised; every case turns on its own facts. This article is general information, not legal advice.