Castle Rock Motorcycle Helmet Law: What Riders Need to Know and How It Affects Your Case

Colorado Does Not Require Adults to Wear Motorcycle Helmets. The Colorado Supreme Court Has Ruled That Choosing Not to Wear One Cannot Be Used Against You to Prove Negligence or Reduce Your Damages. The Insurance Company Will Try Anyway.

Colorado does not require motorcycle riders or passengers aged 18 and older to wear helmets. Under C.R.S. § 42-4-1502, only operators and passengers under 18 must wear DOT-approved helmets while a motorcycle is in motion (Colorado State Patrol, Motorcycle Laws). All riders, regardless of age, are required to wear eye protection. The Colorado Supreme Court ruled in Dare v. Sobule that a rider’s choice not to wear a helmet is inadmissible to prove negligence or to mitigate damages in a motorcycle injury case. If you were injured in a motorcycle crash without wearing a helmet, you have the same legal right to compensation as a helmeted rider. That right is the law. Protecting it requires an attorney who knows how to enforce it.

What Colorado’s Helmet Law Requires

Colorado’s motorcycle helmet statute is straightforward. C.R.S. § 42-4-1502 provides that any motorcycle operator or passenger under age 18 must wear a DOT-approved helmet while the motorcycle is in motion. Violation is a class A traffic infraction. For riders and passengers 18 and older, helmet use is entirely optional (Colorado General Assembly, Helmets).

What is not optional is eye protection. C.R.S. § 42-4-232 requires all motorcycle operators and passengers to wear protective glasses, goggles, or a transparent face shield, unless the rider is wearing a helmet equipped with a visor. A motorcycle windshield does not satisfy this requirement. Failure to wear required eye protection, unlike failure to wear a helmet as an adult, is a citable violation and can be used as evidence of negligence in a crash.

Colorado is one of 29 states with a partial helmet law (covering only minors). Only 18 states and the District of Columbia require all riders to wear helmets. Three states have no helmet law at all (NHTSA, Motorcycle Safety).

The Case That Defines Your Rights: Dare v. Sobule

The single most important legal principle for unhelmeted riders in Colorado comes from the Colorado Supreme Court’s decision in Dare v. Sobule. In that wrongful death case arising from a motorcycle crash, the defense argued that the rider’s failure to wear a helmet should reduce the plaintiff’s damages. The Colorado Supreme Court rejected this argument.

The court held that evidence of a motorcyclist’s failure to wear a protective helmet is inadmissible to show negligence on the part of the injured party or to mitigate damages (Justia, C.R.S. § 13-21-111 annotations). This ruling parallels the court’s treatment of seat belts in Churning v. Staples, 628 P.2d 180 (Colo. App. 1981), which held that the seat belt defense is not available for determining a plaintiff’s negligence under Colorado’s comparative fault statute.

The logic is direct: because Colorado law does not require adult riders to wear helmets, choosing not to wear one is not a violation of any legal duty. An act that is legal cannot be negligent. If an act is not negligent, it cannot reduce damages under comparative fault analysis. The driver who caused the crash remains fully liable for all injuries the crash produced, including head injuries that a helmet might have mitigated.

How Insurance Companies Attack Unhelmeted Riders

Despite Dare v. Sobule, insurance adjusters routinely attempt to use helmet non-use against riders. They do this outside the courtroom, during the claims process, where the rules of evidence do not apply. Their tactics are predictable:

• The “Severity” Argument

  The adjuster says: “We understand the other driver was at fault, but your head injuries would have been less severe with a helmet. We’re reducing our offer to reflect that.” This is the Dare v. Sobule argument dressed up for the claims process. It is not supported by Colorado law. But it works if the rider does not have an attorney who knows the case law, because the rider has no courtroom to enforce the ruling in.

• The “Recklessness” Framing

  The adjuster characterizes the rider as someone who makes dangerous decisions. “You chose to ride without a helmet. You chose to ride a motorcycle. You accepted the risks.” This framing is designed to bias the entire claim evaluation, not just the helmet issue. It reframes a lawful choice as evidence of a reckless personality, making the adjuster’s supervisor more comfortable approving a lower offer. Colorado law does not recognize assumption of risk as a defense in standard negligence actions arising from traffic crashes.

• The Recorded Statement Trap

  The adjuster asks: “Were you wearing a helmet at the time of the crash?” If the rider says no, the answer is documented and used to frame the entire claim. The rider is not legally required to answer this question. The answer is legally irrelevant under Dare v. Sobule. But once it is in the adjuster’s file, it influences every decision about the claim’s value.

What the Safety Data Shows About Helmets

The legal question and the safety question are separate. Your right to compensation does not depend on whether helmets are effective. But understanding the data matters because it may inform your personal riding decisions.

According to the CDC and NHTSA, motorcycle helmets are 37% effective in preventing fatal injuries for riders and 41% effective for passengers. Helmets reduce the risk of head injury by 69%. NHTSA estimates that helmets saved 1,872 lives in 2017 alone, and that an additional 802 lives could have been saved if all riders had worn helmets (CDC, Motorcycle Injury Prevention).

In 2023, observed DOT-compliant helmet use nationwide was 73.8%, the highest rate ever recorded. In states with universal helmet laws, 82.7% of riders wore compliant helmets compared to 65.9% in states with partial or no helmet laws (NHTSA, Motorcycle Helmet Use in 2023).

In 2023, 6,335 motorcyclists were killed nationwide, representing 15% of all traffic fatalities. That is the highest number recorded since FARS began collecting data in 1975 (NHTSA, Motorcycle Safety). These numbers confirm what every rider already knows: motorcycling carries risk. What they do not do is change the legal analysis. A driver who turns left without looking, runs a red light, or rear-ends a motorcycle in stopped traffic is negligent regardless of whether the rider wore a helmet.

Eye Protection: The Requirement That Does Affect Your Case

Unlike helmet use, eye protection is mandatory for all Colorado riders regardless of age under C.R.S. § 42-4-232. Acceptable eye protection includes a helmet-mounted visor, riding goggles, or glasses with safety-rated lenses. A motorcycle windshield alone does not qualify.

This distinction matters for your case. If you were riding without eye protection and debris, wind, or sun glare contributed to the crash, the defense can argue that your failure to comply with a mandatory safety requirement constitutes negligence under Colorado’s comparative fault system (C.R.S. § 13-21-111). Unlike helmet non-use, which is a lawful choice for adults, failure to wear required eye protection is a statutory violation. Statutory violations create a rebuttable presumption of negligence. The distinction is sharp: no helmet (legal choice, inadmissible) versus no eye protection (violation, admissible).

Eye protection is required for all Colorado riders, regardless of their age, and is mandatory by statute under C.R.S. § 42-4-232. All types of eye protection will be acceptable as long as it meets one of the following requirements; a helmet with a visor, riding goggles, or glasses with safety-rated lenses. Only the windshield on a motorcycle will NOT meet this standard.

The fact that you may have chosen not to wear eye protection makes an important difference in your case. If you were wearing no eye protection when debris, wind or sunlight entered into your vision causing the accident, then the defense attorney could argue that your failure to follow the statute regarding the use of eye protection, is evidence of negligence in Colorado’s Comparative Fault System (C.R.S. § 13-21-111). In addition, unlike an adult rider who chooses to ride without a helmet, which is a legal choice, there are statutes governing the use of eye protection, if you fail to adhere to those statutes, it is considered a violation. Violations of statutes create a rebuttable presumption of negligence. There is a very clear distinction here; no helmet (a legal choice for an adult, not admissible), versus no eye protection (violation of statute, admissible).

Frequently Asked Questions: Motorcycle Helmets and Colorado Law

• Do you have to wear a helmet on a motorcycle in Colorado?

  No, if you are 18 or older. Colorado does not require adult motorcycle riders or passengers to wear helmets. Riders and passengers under 18 must wear DOT-approved helmets under C.R.S. § 42-4-1502. All riders regardless of age must wear eye protection under C.R.S. § 42-4-232.

• Can not wearing a helmet be used against me in a motorcycle accident case?

  No. The Colorado Supreme Court ruled in Dare v. Sobule that evidence of a motorcyclist’s failure to wear a helmet is inadmissible to show negligence or to mitigate damages. Because Colorado law does not require adults to wear helmets, choosing not to wear one cannot be treated as negligence. However, insurance companies routinely attempt to use helmet non-use against riders during the claims process. An attorney who knows this case law can prevent that from happening.

• Will I receive less compensation if I was not wearing a helmet?

  Not under Colorado law. Dare v. Sobule prohibits the defense from introducing evidence of helmet non-use to reduce damages. Your compensation should be based on the full extent of your injuries as caused by the at-fault driver’s negligence. In practice, however, insurance adjusters may try to factor helmet non-use into their valuation during pre-litigation negotiations. An experienced motorcycle accident attorney enforces the legal protections that exist on paper.

• What type of helmet meets Colorado’s requirement for riders under 18?

  The helmet must be U.S. Department of Transportation (DOT) certified. All DOT helmets will bear a DOT sticker located at the rear of the helmet; the helmet must completely cover your ears; it must contain a heavy-duty inner liner; and it must have a sturdy chin strap. Even though novelty helmets may look like they have DOT stickers, none of these types of helmets meet DOT standards.

• Is eye protection required for all motorcycle riders in Colorado?

  Yes. Pursuant to C.R.S. § 42-4-232, all motorcycle operators and their passengers must wear either protective eyeglasses, goggles, or a transparent face shield while operating a motorcycle. Any motorcycle visor that protects the eyes satisfies this requirement; however, windshields from motorcycles do not. Although the statute regarding helmet usage is not a criminal violation, failure to provide proper eye protection is a statutory violation that may be used as evidence of negligence in a motorcycle accident.

You Had the Right to Choose. They Did Not Have the Right to Hit You.

If you were injured in a motorcycle crash in Colorado, the question is not whether you wore a helmet. The question is whether the driver who hit you was negligent. The Colorado Supreme Court drew that line. The insurance company will try to erase it. Rampart Injury Lawyers does not let them.

We represent riders along the entire I-25 corridor, from Denver to Colorado Springs, who were injured by negligent drivers. We understand the law. We understand the bias riders face. And we understand that the choice to ride without a helmet is your right under Colorado law, not evidence of your fault.

Related Pages: Motorcycle Accident Resources

• Denver Motorcycle Accident Lawyer
• Colorado Springs Motorcycle Accident Lawyer
• Left-Turn Motorcycle Crashes
• Lane Filtering and Lane Splitting in Colorado
• Motorcycle Accident Settlements in Colorado
• Colorado Motorcycle Helmet Law and Your Case
• Road Rash and Skin Graft Injuries
• Motorcycle vs. Car Accidents: Why the Cases Are Different

Related Practice Areas

• Colorado Traumatic Brain Injury Lawyers

Sources and Citations

• Colorado State Patrol, Motorcycle Laws
• Colorado General Assembly, Helmets (C.R.S. § 42-4-1502)
• Dare v. Sobule; Churning v. Staples, 628 P.2d 180 (Colo. App. 1981), annotated in C.R.S. § 13-21-111
• NHTSA, Motorcycle Safety (6,335 fatalities in 2023)
• CDC, Motorcycle Injury Prevention (37% fatality reduction, 69% head injury reduction)
• NHTSA, Motorcycle Helmet Use in 2023 (73.8% DOT-compliant use, Research Note DOT HS 813 634)
• Colorado Revised Statutes: C.R.S. § 42-4-1502 (helmets), § 42-4-232 (eye protection), § 13-21-111 (comparative fault)

Disclaimer: The information on this page is for general informational purposes only and does not constitute legal advice. Every case is different. Past results do not guarantee future outcomes. Reading this page does not create an attorney-client relationship with Rampart Injury Lawyers. If you have been injured in a motorcycle crash in Colorado Springs, contact us for a free consultation to discuss the specific facts of your case.