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Motorcycle Accident Claims in Idaho

The Idaho helmet law, whether lane splitting is legal, how fault is shared after a motorcycle crash, and the deadline to sue.

Short answer: Idaho requires a helmet meeting the director's standards only for people under 18 who operate or ride a motorcycle, motorbike, UTV or ATV. Idaho Code § 49-666(1)

Motorcycle helmet lawIdaho requires a helmet meeting the director's standards only for people under 18 who operate or ride a motorcycle, motorbike, UTV or ATV. The rule does not apply on private property, to vehicles used as implements of husbandry, to completely enclosed autocycles, or to UTVs equipped with a roll cage and seat belts. The statute does not say whether going without a helmet affects damages.
Lane splittingIdaho has no state law that specifically addresses motorcycle lane splitting or lane filtering. The general lane rule requires that on highways divided into clearly marked lanes, a vehicle be driven as nearly as practicable entirely within a single lane and not moved from that lane until the driver has made sure the move is safe.
Reviewed Title 49, Chapter 6 (Rules of the Road; full-chapter PDF text searched for every motorcycle and lane provision) on 2026-10-28; no provision on lane splitting found.
Fault rule (comparative negligence)Modified comparative negligence (50% bar). An injured person can recover only if his or her negligence or responsibility was not as great as that of the person being sued; damages are reduced by the injured person's share.
Minimum car insuranceMinimum liability amounts are $25,000 for injury or death of one person, $50,000 for injury or death of two or more people in one accident, and $15,000 for property damage (25/50/15).
Deadline to sue for an injuryA lawsuit for injury to a person must be filed within two years. The claim generally accrues at the time of the act or occurrence, and the period is not extended because of continuing consequences.

More Idaho personal injury & wrongful death

FAQ

Do you have to wear a motorcycle helmet in Idaho?
Idaho requires a helmet meeting the director's standards only for people under 18 who operate or ride a motorcycle, motorbike, UTV or ATV. The rule does not apply on private property, to vehicles used as implements of husbandry, to completely enclosed autocycles, or to UTVs equipped with a roll cage and seat belts. The statute does not say whether going without a helmet affects damages.
Is lane splitting legal in Idaho?
Idaho has no state law that specifically addresses motorcycle lane splitting or lane filtering. The general lane rule requires that on highways divided into clearly marked lanes, a vehicle be driven as nearly as practicable entirely within a single lane and not moved from that lane until the driver has made sure the move is safe.
Can you recover damages if you were partly at fault in Idaho?
Modified comparative negligence (50% bar). An injured person can recover only if his or her negligence or responsibility was not as great as that of the person being sued; damages are reduced by the injured person's share.
What is the minimum car insurance required in Idaho?
Minimum liability amounts are $25,000 for injury or death of one person, $50,000 for injury or death of two or more people in one accident, and $15,000 for property damage (25/50/15).
What is the statute of limitations for personal injury in Idaho?
A lawsuit for injury to a person must be filed within two years. The claim generally accrues at the time of the act or occurrence, and the period is not extended because of continuing consequences.

General legal information, not legal advice. Laws change and local rules can differ; check the linked official source or talk to a lawyer about your situation.