State has a Far Right as Practicable Requirement

A bicyclist traveling slower than normal traffic must ride as near to the right-hand curb, roadway edge, or shoulder as practicable. Exceptions include preparing for a left turn, avoiding hazards, riding in a substandard-width lane, or riding on certain one-way roadways.

Allows Two Abreast Riding

Hawaii generally requires bicyclists on roadways to ride single file. Two-abreast riding is permitted only on bicycle lanes and bicycle paths, when traffic flow is not impeded and the facility is wide enough, unless a rule or local ordinance prohibits it.

Single File is Required

Bicyclists riding on roadways must ride single file. Two-abreast riding is permitted only on bicycle lanes and bicycle paths of sufficient width where traffic flow is not impeded and no rule or ordinance prohibits it.

Has a Safe Passing Law

Hawaii is a three-foot passing state. A motorist overtaking a bicyclist must leave at least three feet of separation and may not move back to the right until safely clear of the bicyclist.

Helmets are required on the road

Hawaii requires a properly fitted bicycle helmet for any bicycle operator, passenger in a restraining seat, or trailer occupant under age 16. Violations carry a fine of up to $25, which a parent or guardian is liable to pay.

If Bike Lanes are present, they are required ( except when unsafe )

When a usable bicycle lane is provided, a bicyclist traveling slower than traffic must ride within it. Riders may leave the lane to pass, prepare for a turn, or avoid debris or other hazards.

Riders may use the sidewalks

Sidewalk riding is generally allowed at 10 mph or less, with the rider required to yield to pedestrians. It is prohibited on sidewalks within business districts.

Does the Impeding Statute Apply to Bikes

Hawaii generally requires a slower bicyclist to ride near the right side of the roadway, but expressly permits taking the lane when necessary for safety, including to avoid hazards or where the lane is too narrow to share safely.

Whether cyclists may treat stop signs as yield signs (the "Idaho stop").

Hawaii has not adopted a stop-as-yield ("Idaho Stop") law. Because bicyclists carry the same duties as vehicle drivers, they must stop fully at stop signs and obey traffic signals the same way motorists do.

Restrictions exist on e-bikes and usage

Hawaii defines a low-speed electric bicycle (per the federal definition: motor 750 watts or less, motor-only speed under 20 mph) as a type of bicycle, so e-bikes are generally subject to the same bicycle laws. Hawaii additionally requires e-bike operators to be at least 15 years old.

Allows the concept of Contributory Negligence that allows any contributory fault resuls in 'no fault'

Hawaii does not follow contributory negligence. Hawaii uses a modified comparative negligence system: a bicyclist's recovery is reduced by their percentage of fault, and recovery is barred if their fault is greater than that of the party or parties they are suing.