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California Motorcycle Accident Claims

California is an at-fault state, and motorcycle claims follow the same rules: a two-year deadline (CCP § 335.1) and pure comparative negligence that reduces but never bars recovery. California has a universal helmet law (Vehicle Code § 27803) requiring all riders and passengers to wear a compliant helmet, which can affect a head-injury fault argument.

By Find Local Law Editorial Team · Last reviewed: May 26, 2026

Researched and drafted with AI assistance and verified against primary sources (statutes, Judicial Council forms, and official court websites). This is general information, not legal advice.

This is general information, not legal advice. Talk to a California attorney promptly — the two-year deadline applies.

A California motorcycle crash claim follows the same at-fault framework as a car accident: you pursue the at-fault party and their insurer. See the personal injury hub for the statewide rules.

The deadline and fault rule

The two-year deadline (Code of Civil Procedure § 335.1) applies, and California’s pure comparative negligence rule (Li v. Yellow Cab Co., 1975) governs: your recovery is reduced by your share of fault but never fully barred.

California’s universal helmet law

California has a universal helmet law (Vehicle Code § 27803): all drivers and passengers on a motorcycle must wear a compliant safety helmet — not just riders under a certain age. A compliant helmet means one that meets federal safety standards.

How the helmet rule can affect a claim

Because pure comparative negligence lets a defendant argue you share fault, an insurer may claim that not wearing a helmet contributed to head injuries and try to reduce your recovery. But California’s universal law means most riders are already required to wear one, so a rider who complied has a strong answer to that argument. Even where some fault is assigned, you are never fully barred from recovering.

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Frequently asked questions

Does California require motorcycle helmets?
Yes. California has a universal helmet law (Vehicle Code § 27803): all drivers and passengers on a motorcycle must wear a compliant safety helmet.
How long do I have to file a motorcycle accident claim?
Generally two years from the date of the crash (Code of Civil Procedure § 335.1). Missing the deadline usually bars the claim.
Can not wearing a helmet hurt my claim?
A defendant may argue a lack of a helmet contributed to head injuries, which is relevant under pure comparative negligence. But California's universal law means most riders are required to wear one.

Sources

Related guides

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