HRS §291C-138
Waipio Valley Access: Four-Wheel Drive Required
This law says that, except for a few special situations, only low-range four-wheel drive vehicles may drive on the road between the Waipio Valley lookout and the valley floor. All-wheel drive does not count. Breaking this rule costs a $250 fine.
everyone
The statute, as written — Waipio valley access; required four-wheel drive vehicle use
(a) No vehicle, other than a low-range, four-wheel drive vehicle, shall at any time be driven through or in the connecting roadway corridor between the Waipio valley lookout and the floor of Waipio valley; provided that any vehicle may be driven in these areas if it is: (1) In the process of executing a legal turn, lane change, or parking maneuver to exit the area; (2) An authorized emergency vehicle performing the functions under section 291C-26; (3) An official federal, state, or county vehicle in the performance of its actual duty; (4) Necessary to assist a stalled or broken vehicle; (5) Necessary to yield to an authorized emergency vehicle pursuant to section 291C-65; (6) A vehicle engaged in or in support of research or maintenance activities; or (7) Otherwise provided by law. (b) Violation of this section shall subject the driver of the vehicle to a fine of $250. (c) For purposes of this section, an all-wheel drive vehicle shall not be considered to be a low-range, four-wheel drive vehicle.
Sections this one refers to
§291C-26 When emergency vehicles can ignore traffic rules
§291C-65 What to do when an emergency vehicle approaches
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.