Motorcycle Accident Laws in Wyoming (2026): Deadlines

A motorcycle crash in Wyoming 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 splitting is allowed. Wyoming is unusual in one respect, because its constitution forbids caps on injury and death damages, so it is worth getting right. This guide explains how Wyoming answers each one. 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 Wyoming is four years

The statute of limitations is the legal deadline to file a lawsuit. In Wyoming, a personal injury claim, which includes a motorcycle crash, generally must be filed within four years under Wyoming Statutes 1-3-105, the provision covering an injury to the rights of the plaintiff not arising on contract. That four-year window is longer than what most states allow. A wrongful death claim is the exception: under Wyoming Statutes 1-38-102, it must be brought within two years after the date of death, not four. Claims against a government entity carry their own earlier notice requirements under the Wyoming Governmental Claims Act. A court will normally dismiss a late case no matter how strong it is, so the deadline should be confirmed early.

Fault rule: modified comparative fault, barred above 50 percent

Wyoming follows modified comparative fault under Wyoming Statutes 1-1-109. A jury assigns each party a percentage of fault. An injured rider can recover as long as the rider's fault is not more than 50 percent of the total fault of everyone involved, and the award is reduced by the rider's own percentage. If the rider's fault is more than 50 percent, the rider recovers nothing. Because the bar is set at more than 50 percent, a rider found exactly 50 percent at fault can still recover half. A rider found 20 percent at fault with 100,000 dollars in damages would recover 80,000 dollars; a rider found 60 percent at fault would recover nothing.

This rule matters for riders because insurers sometimes try to push a motorcyclist's share of fault past that line, leaning on a bias that riders are reckless. Clear evidence that the rider was operating lawfully is one way that pressure is met.

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

Wyoming is not a no-fault state. It uses a traditional at-fault, tort system, so there is no statutory injury threshold a rider must clear before suing. After a crash, an injured rider pursues the at-fault driver and that driver's liability insurer directly. Uninsured and underinsured motorist coverage can be important when the at-fault driver carries only minimum limits. Because Wyoming is a rural state with long distances between trauma care and 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

Wyoming requires a protective helmet only for motorcycle operators and passengers under 18 years of age under Wyoming Statutes 31-5-115. Riders 18 and older may legally ride without a helmet. Unlike many states, Wyoming does not impose a separate statutory eye-protection requirement, though eye protection is still strongly recommended. The helmet rule for minors applies on public highways and streets and does not apply to a person riding within an enclosed cab. Wyoming is one of the states with a partial, age-based helmet rule rather than a universal one.

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

Because riding without a helmet is legal for adults in Wyoming, 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. Wyoming does not have a statute like the seatbelt rule that broadly bars this kind of evidence for motorcycles, so a defendant may try to argue under comparative fault that a missing helmet failed to mitigate head or brain injuries. If a court allows that argument, 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 splitting is not allowed in Wyoming

Wyoming does not authorize lane splitting or lane filtering. Under Wyoming Statutes 31-5-115, a motorcycle may not be operated between lanes of traffic or between adjacent rows of vehicles, so riding between stopped or moving cars is prohibited. The same section entitles a motorcycle to full use of its lane and allows two motorcycles to ride abreast in one lane by mutual consent, but no more. A rider who splits lanes can be cited, and the conduct can be raised as comparative fault if a crash follows. Riders should treat lane splitting as prohibited statewide and verify the current law before relying on any change.

Damage caps and minimum insurance

Wyoming is one of the few states whose constitution forbids damage caps. Article 10, Section 4 of the Wyoming Constitution provides that no law shall be enacted limiting the amount of damages to be recovered for causing the injury or death of any person. As a result, Wyoming has no cap on compensatory damages and no cap on punitive damages in a motorcycle injury or wrongful death case, which sets it apart from most states. On insurance, Wyoming requires minimum liability coverage of 25,000 dollars per person and 50,000 dollars per accident for bodily injury, plus 20,000 dollars for property damage (25/50/20). 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-position 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 Wyoming 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 Wyoming attorney, both because of the deadlines above, especially the shorter two-year window for a wrongful death claim, 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.