Is Wearing a Helmet Legally Required in Arizona?
Only for riders under 18. Under A.R.S. Section 28-964, motorcycle operators and passengers under the age of 18 must wear a properly secured helmet. Adult riders 18 and older are not legally required to wear one, though all riders regardless of age must wear eye protection unless the motorcycle has a windshield.
This is a narrower requirement than many riders expect, since some states require helmets for every rider regardless of age. Arizona's approach leaves the choice to adult riders, while still protecting younger riders who may not fully appreciate the risks of riding without one.
A Scottsdale motorcycle accident lawyer still discusses helmet use carefully with adult clients, since even though skipping a helmet is not illegal for adults, an insurer may still try to argue it affected the severity of certain specific injuries.
Can a Lack of a Helmet Reduce My Compensation?
It can, but only in a fairly limited way. Because Arizona has no legal requirement for adult riders to wear a helmet, an insurer generally cannot argue that riding without one caused the accident itself. However, some insurers still attempt to argue that a lack of a helmet worsened specific head injuries, potentially affecting that portion of a damages claim under Arizona's comparative negligence rule.
This argument typically applies only to injuries a helmet could plausibly have prevented or reduced, not to broken bones, road rash, or other injuries unrelated to head trauma.
Is Lane Splitting Legal for Motorcycles in Arizona?
No. Under A.R.S. Section 28-903, a motorcyclist cannot pass another vehicle occupying the same lane, which effectively bans lane splitting, meaning riding between lanes of moving traffic. A citation for this violation can also be used as evidence of comparative fault if a crash results from the maneuver.
Arizona did carve out a narrower exception in 2022 under A.R.S. Section 28-903.01, allowing limited lane filtering when traffic is stopped or moving slowly, the motorcycle travels 15 miles per hour or less, and the posted speed limit is 45 miles per hour or lower. Outside those specific conditions, moving between lanes remains illegal and can still support a comparative fault argument.
What Other Equipment Does Arizona Require on a Motorcycle?
Beyond helmets for minors and eye protection for all riders, Arizona requires every motorcycle to have a rearview mirror, a proper seat, working headlamps, and footrests, with an additional seat and footrests required if carrying a passenger. Motorcyclists are also entitled to full use of a traffic lane and generally cannot ride more than two abreast.
These equipment requirements matter in a claim, since a violation can sometimes be used by an insurer to argue comparative fault, similar to how a lane-splitting citation typically gets used against a rider.
What Evidence Supports a Motorcycle Accident Claim?
Because motorcycle cases often involve disputes over lane position, visibility, and equipment compliance, specific evidence matters considerably to how the claim is ultimately evaluated. Useful evidence typically includes:
- The police accident report and any citations issued to either party
- Photos of the motorcycle, other vehicles, and the accident scene
- Witness statements from people who observed the collision
- Medical records documenting the specific injuries sustained
- Any available dashcam or surveillance footage of the crash
How Does Wyatt Injury Law Personal Injury Lawyers Handle These Cases?
Motorcycle accident cases carry unique legal issues around helmet use, lane position, and rider bias that a standard car accident case does not raise. Wyatt Injury Law Personal Injury Lawyers builds cases around the specific facts of each crash, addressing these issues directly rather than letting an insurer's assumptions control the outcome.
What Should Your Next Step Be?
Understanding Arizona's specific motorcycle laws can shape how your case gets evaluated after a crash occurs. If you were hurt in a motorcycle accident in the Scottsdale area, a Scottsdale motorcycle accident lawyer can review the facts and help you understand your options.