Haw. Rev. Stat. § 286-8: Rules and regulations.

In order to decrease the deaths, injuries, damage, and losses resulting from highway traffic accidents, the state director of transportation shall, subject to the requirements of chapter 91, adopt rules and regulations dealing with: identification and surveillance of accident locations; highway design, construction, and maintenance; traffic control devices; pedestrian safety; police traffic services; and debris hazard control and clean up.

Any person conducting construction, maintenance, surveying, or other work on or adjacent to any public street or highway or any street where traffic regulations are imposed by state or county authority who violates the rules and regulations governing the use of traffic control devices at such work sites shall, in addition to any other penalty imposed by law, be fined not more than $1,000 or imprisoned not more than one year, or both.