Haw. Rev. Stat. § 291-31.5
(a) No person shall knowingly operate, affix or cause to be affixed, display, or possess any lamp, reflector, or illumination device that appears to be the color blue, or colors blue and red, upon any motor vehicle, motorcycle, motor scooter, bicycle, electric foot scooter, or moped, except for:
(3) Department of land and natural resources division of conservation and resources enforcement vehicles with blue and red lamps, reflectors, or illumination devices authorized and approved by the chairperson of the board of land and natural resources.
This prohibition shall not apply to factory-installed instrument illumination.
[L 1985, c 182, §1; am L 1991, c 210, §1; am L 2007, c 109, §1; am L 2016, c 99, §1; am L 2021, c 174, §5; am L 2022, c 278, §45]