HRS §291C-124
Keep your view and control of the car clear
This law says you cannot drive a car if it is loaded or has too many people in the front seat so that you cannot see or control the car. You also cannot hold anything in your lap or let anything in your area that blocks your control. Passengers cannot sit in a way that blocks your view or control.
The statute, as written — Obstruction to driver's view or driving mechanism
(a) No person shall drive a vehicle when it is so loaded, or when there are in the front seat such a number of persons, exceeding three, as to obstruct the view of the driver to the front or sides of the vehicle, or as to interfere with the driver's control over the driving mechanism of the vehicle. (b) While operating a motor vehicle, no person shall hold in the person's lap, or allow to be in the driver's immediate area, any person, animal, or object which interferes with the driver's control over the driving mechanism of the vehicle. (c) No passenger in a vehicle shall ride in such position as to interfere with the driver's view ahead or to the sides, or to interfere with the driver's control over the driving mechanism of the vehicle.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.