Missouri’s Motorcycle Helmet Law: Who Is Required to Wear a Helmet?

About the Author

Ethan Charles (“EC”) Duckworth is the founding attorney of Duckworth Injury Law. EC earned his law degree from the University of Missouri - Columbia, where he graduated in the top 10 of his class and served as an Editor of the Missouri Law Review. EC currently serves as a member of the Missouri Association of Trial Attorneys (MATA) and is a graduate of the Ross T. Roberts Trial Academy. EC has represented hundreds of injury victims throughout his career resulting in tens of millions of dollars in compensation recovered. EC routinely handles serious injury accidents involving motorcycle crashes across Missouri. 

Not Every Motorcyclist Is Required To Wear a Helmet in Missouri. Learn About Missouri Motorcycle Helmet Laws

Missouri no longer requires every motorcyclist to wear a helmet. Since August 28, 2020, Missouri has had a partial motorcycle helmet law that allows certain riders who are 26 years old or older to ride without protective headgear.

The law, however, does not give every adult motorcyclist an unrestricted right to ride without a helmet. Whether a helmet is required depends on the person’s age, whether the person is operating the motorcycle or riding as a passenger, the operator’s licensing status, and the operator’s available insurance coverage.

Who Must Wear a Motorcycle Helmet in Missouri?

Under Missouri Revised Statute § 302.020, motorcycle operators and passengers who are under 26 years old must wear protective headgear whenever the motorcycle is traveling on a Missouri highway.

The helmet requirement also applies to motorcycle operators of any age who are riding with a motorcycle instruction permit. As a result, a person who is 26 or older but still operating under an instruction permit must wear a helmet. Simply turning 26 does not remove the helmet requirement for a permit holder.

When Can a Missouri Motorcyclist Ride Without a Helmet?

A qualified motorcycle operator who is at least 26 years old may operate a motorcycle without a helmet only if the operator maintains proof of financial responsibility as required by Missouri law and has health insurance or another form of insurance that provides medical benefits for injuries suffered while operating or riding a motorcycle. See RSMo. § 302.026.

The operator must be able to provide proof of the required coverage to law enforcement by presenting an insurance card upon request. Before choosing to ride without a helmet, a motorcyclist should carefully review the applicable health or medical insurance policy to confirm that it does not exclude injuries arising from motorcycle use.

An operator who is 26 or older but does not satisfy these insurance requirements is not legally authorized to ride without a helmet.

What About Motorcycle Passengers?

Missouri law specifically requires motorcycle passengers who are under 26 years old to wear protective headgear. A passenger who is 26 or older is not subject to the statewide helmet requirement contained in § 302.020.

The separate insurance requirements found in § 302.026 are written specifically for motorcycle operators who choose to ride without a helmet. Nevertheless, motorcycle passengers of every age should seriously consider wearing a properly fitted, safety-compliant helmet.

Can Police Stop a Rider Just to Check Helmet Compliance?

Missouri law provides that a person cannot be stopped, inspected, or detained solely to determine whether the person is complying with the motorcycle helmet requirements.

Law enforcement may still investigate helmet and insurance compliance after making a lawful stop for another reason, such as speeding, an equipment violation, reckless driving, or a traffic collision.

What Is the Penalty for Violating Missouri’s Helmet Law?

Failure to wear protective headgear when required under § 302.020 is an infraction punishable by a fine of up to $25.

Missouri law also provides that no court costs may be imposed for the helmet violation and no points may be assessed against the person’s driver’s license

Can a Missouri City Require Helmets for Riders Over 26?

Missouri law prohibits cities, counties, and other political subdivisions from imposing their own motorcycle helmet requirements on operators or passengers.

As a result, a Missouri city generally cannot adopt a stricter motorcycle helmet ordinance requiring every adult rider to wear a helmet. The statewide helmet rules apply throughout Missouri.

What Type of Motorcycle Helmet Should You Wear?

When a helmet is required, or when a rider voluntarily chooses to wear one, the helmet should meet applicable safety standards and fit securely.

The National Highway Traffic Safety Administration recommends using a DOT-compliant helmet. A compliant helmet should display the DOT symbol on the back, indicating that the helmet is represented as meeting Federal Motor Vehicle Safety Standard No. 218.

Riders should be cautious about novelty helmets. Although these products may look similar to protective motorcycle helmets, they may not provide the same level of impact protection or meet federal safety requirements.

Even when Missouri law permits helmetless riding, wearing a proper helmet can substantially reduce the risk of death or serious brain injury. NHTSA has reported that motorcycle helmets reduce rider fatalities and significantly lower the risk of brain injuries.

Missouri’s own motorcycle crash statistics reinforce the importance of helmet use. MoDOT reported 131 motorcycle fatalities in Missouri during 2025, including 64 deaths involving people who were either not wearing a helmet or wearing a non-DOT-compliant helmet.

Can You Recover Compensation If You Were Not Wearing a Helmet?

Yes. Failing to wear a helmet does not automatically prevent an injured motorcyclist from bringing a claim against the driver who caused the collision.

Helmet use ordinarily does not determine who caused a motorcycle crash. A driver who turns in front of a motorcycle, changes lanes without checking a blind spot, follows too closely, runs a traffic signal, or drives while distracted cannot avoid responsibility simply because the motorcyclist was not wearing a helmet.

However, helmet use may become an issue when the rider suffers a head, skull, or traumatic brain injury. An insurance company may argue that the rider violated Missouri law or that wearing a helmet would have prevented or reduced the severity of the injuries.

Missouri follows a pure comparative fault system. Under that system, fault attributed to an injured person may reduce the compensation awarded but does not necessarily eliminate the person’s claim.

Whether helmet evidence is admissible or can be used to reduce damages is highly dependent on the specific facts of the case. Relevant considerations may include whether the rider was legally required to wear a helmet, whether the claimed injuries involved the head or brain, the type and severity of the collision, whether a helmet would have prevented or reduced the particular injury, and whether qualified expert testimony supports the insurance company’s argument.

What Should You Do After a Missouri Motorcycle Accident?

After a motorcycle crash, obtain medical treatment promptly and report every symptom to your medical providers. This includes headaches, dizziness, confusion, memory problems, changes in vision, nausea, loss of consciousness, and other potential signs of a traumatic brain injury. Some brain injury symptoms may not become immediately apparent after the collision.

When possible, preserve the motorcycle, helmet, clothing, photographs, video footage, witness information, crash report, and relevant insurance records. This evidence may become important when determining how the collision occurred and responding to arguments raised by the insurance company.

You should also use caution before giving a recorded statement to the other driver’s insurance company. An adjuster may ask questions about your speed, experience, helmet use, medical history, and actions immediately before the collision. Statements made early in the process may later be used to dispute liability or minimize your injuries.

Motorcycle claims often involve disagreements over visibility, speed, reaction time, helmet use, and rider behavior. Early investigation can be critical to locating witnesses, obtaining nearby surveillance footage, inspecting the motorcycle, downloading available vehicle data, and documenting physical evidence before it disappears.

Speak With a Missouri Motorcycle Accident Lawyer

If you were injured in a motorcycle accident in Columbia, Jefferson City, Lake of the Ozarks, or elsewhere in Mid-Missouri, Duckworth Injury Law can evaluate the collision, explain how Missouri’s helmet law may affect your case, and deal directly with the insurance companies.

Attorney E.C. Duckworth personally handles each case and represents injured Missourians seeking compensation for medical expenses, lost income, pain, disability, and other losses caused by negligent drivers.

Contact Duckworth Injury Law to schedule a free consultation.