What should motorcycle riders know about Arizona injury claims?

The bias is the second defendant

Adjusters and juries walk in assuming the rider was speeding, weaving, invisible by choice. That prejudice is worth real money to insurers, so a rider case has to be over-built: download the bike's and car's data where it exists, work the physical evidence, scrapes, gouges, crush profiles, and put reconstruction science in front of the assumption before it hardens.

Helmets: what the law requires and what the insurer will argue

Arizona requires helmets for riders under eighteen; adults may ride without one. Expect the insurance company to argue that an unhelmeted rider's head injuries would have been less severe, pushing to shave the recovery under comparative-fault principles. The argument has limits, it says nothing about who caused the crash, and it never touches injuries a helmet would not have prevented, but it should be anticipated, not discovered at mediation.

Lane filtering is legal; lane splitting is not

Since September 2022, Arizona allows a two-wheeled motorcycle to move between lanes of completely stopped traffic, at fifteen miles per hour or less, on roads posted at forty-five or less with at least two lanes running the same direction. Not on shoulders, not on medians, not on freeways, and never past moving cars, that is lane splitting, and it remains illegal. The line matters in an injury case: a rider filtering lawfully who gets doored or cut off has a clean liability story, while the defense will paint any filtering crash as illegal splitting to manufacture fault. Even then, pure comparative fault means a percentage argument reduces a recovery rather than ending it.

The left-turn crash, still the killer

The signature motorcycle collision is the driver turning left across an oncoming rider they swear they never saw. Right of way usually belongs to the rider, and "I didn't see him" is a confession of inattention, not a defense. These cases are won with timing: light cycles, sight lines, speed analysis, and witnesses locked in early.

Insurance realities for riders

The 25/50/15 minimums apply to motorcycles too, and they vanish fast against the injuries riders actually suffer. Because the at-fault driver's policy is so often too small, uninsured and underinsured motorist coverage is the single most important line on a rider's own policy, and Arizona insurers must offer it, with rejection valid only in writing. In a serious rider case, we chase every layer: the driver's policy, employer liability, UM and UIM, and any umbrella above them.

Related: Arizona Insurance Minimums · Left-Turn Crash Fault · Arizona Fault Rules · All Common Questions

Injured in Texas? Texas applies different rules to many of the topics on this page. See Texas Motorcycle Claims or all Texas answers.

This page is general information about Arizona law, not legal advice about your specific situation. Deadlines and outcomes depend on facts; talk to a lawyer about yours.