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Idaho Motorcycle Helmet Law Laws (2026)

Conditional: Idaho requires a helmet only for operators and riders under 18.

ConditionalVerified Jun 18, 2026

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Idaho requires a helmet only for operators and riders under 18. See Idaho Code 49-666.

Official source: legislature.idaho.gov →

General legal information, not legal advice — verify important decisions with a licensed attorney.

Motorcycle Helmet Law in states bordering Idaho

The same rule in each neighboring state LawLert has verified, from that state’s own official source.

MontanaConditional
Montana requires a helmet only for operators and passengers under 18. See MCA 61-9-417.
Verified Jun 18, 2026 · Source: mca.legmt.gov · Full Montana rule →
NevadaRestricted
Nevada requires the driver and the passenger to wear protective headgear whenever a motorcycle or moped is driven on a highway. See NRS 486.231.
Verified Jun 18, 2026 · Source: leg.state.nv.us · Full Nevada rule →
OregonRestricted
Oregon requires all motorcycle operators and passengers to wear a DOT helmet — one carrying the DOT label. See ORS 814.269.
Verified Jun 18, 2026 · Source: oregonlegislature.gov · Full Oregon rule →
UtahConditional
Utah requires a helmet only for riders under 21; riders 21 and older are exempt. See UCA 41-6a-1505.
Verified Jun 18, 2026 · Source: le.utah.gov · Full Utah rule →
WashingtonRestricted
Washington requires every operator and passenger to wear a DOT helmet — one carrying the DOT label — with no age exception. See RCW 46.37.530.
Verified Jun 18, 2026 · Source: app.leg.wa.gov · Full Washington rule →
WyomingConditional
Wyoming requires a helmet only for riders under 18; adults are exempt. See Wyo. Stat. 31-5-115.
Verified Jun 18, 2026 · Source: wyoleg.gov · Full Wyoming rule →

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