HRS §291C-51
Driving rules on divided highways
This section tells drivers how to use roads that are split into separate lanes by a barrier or open space. You must stay on the right-hand roadway unless signs or police say otherwise. You cannot cross the dividing area except at official openings or crossovers.
The statute, as written — Driving on divided highways
Whenever any highway has been divided into two or more roadways by leaving an intervening space or by a physical barrier or clearly indicated dividing section so constructed as to impede vehicular traffic, every vehicle shall be driven only upon the right-hand roadway unless directed or permitted to use another roadway by official traffic-control devices or police officers. No vehicle shall be driven over, across, or within any such dividing space, barrier, or section, except through an opening in such physical barrier or dividing section or space or at a cross-over or intersection as established, unless specifically prohibited by public authority.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.