HRS §291C-153
How motorcycles can use traffic lanes
Motorcycles can use a full lane, and cars cannot crowd them out. Riders cannot pass a car in the same lane, ride between lanes or rows of cars, or ride more than two side by side. Police on duty are exempt from the passing and lane-splitting rules.
The statute, as written — Operating motorcycles on roadways laned for traffic
(a) All motorcycles are entitled to full use of a lane and no motor vehicle shall be driven in such a manner as to deprive any motorcycle of the full use of a lane. This subsection shall not apply to motorcycles operated two abreast in a single lane. (b) The operator of a motorcycle shall not overtake and pass in the same lane occupied by the vehicle being overtaken. (c) No person shall operate a motorcycle between lanes of traffic or between adjacent lines or rows of vehicles. (d) Motorcycles shall not be operated more than two abreast in a single lane. (e) Subsections (b) and (c) shall not apply to police officers in the performance of their official duties.
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