An overview of Hawaii's bicycle laws, reviewed and cited to primary sources. Use the sections below to jump to a specific rule, or the Sources block at the end for the full citation list.
This guide is for general information only and is not legal advice. Laws change — verify current rules with your state DOT or a licensed attorney before relying on this for any legal matter. Read full disclaimer.
Helmet rules
Required under age
Required under age 16
Applies to passengers
Yes
Standard
CPSC (16 C.F.R. Part 1203).
Penalty
Civil violation; fine of up to $25 for a first offense. Courts often waive the fine on proof that the minor has obtained a CPSC-certified helmet.
HRS § 291C-145 prohibits bicycle operation on a sidewalk within a business district. Outside business districts, sidewalk cycling is permitted but the rider must travel at no more than 10 mph, yield the right-of-way to pedestrians, and give an audible signal before overtaking. Counties may impose stricter rules — Honolulu prohibits sidewalk riding throughout downtown and Waikiki.
HRS § 291E-61 makes it unlawful to operate or assume actual physical control of a 'vehicle' while under the influence, and HRS § 291C-1 defines vehicle to include bicycles. A bicycle DUI carries the same statutory penalty range as an auto DUI — fines from $250 to $1,000 on a first offense, possible jail time, and a one-year driver-licence revocation if the rider holds a Hawaii licence.
White lamp on the front, visible from a distance of at least 500 feet.
Rear requirement
Rear reflector or light
Rear spec
Red reflector on the rear visible from a distance of 50 to 300 feet when directly in front of lawful upper-beam headlamps. A red rear lamp visible from 500 feet may be used in addition to the reflector.
Bicycles and pedestrians are prohibited on Hawaii's Interstate H-1, H-2, H-3, and H-201 freeways under HRS § 291C-101 and HDOT signage. The Interstate corridors on Oahu are urban controlled-access expressways; all are signed prohibited at on-ramps. Conventional state and county highways across the islands are open by default.