(a) Any motor vehicle may be equipped with not more than one spotlight and every lighted spotlight shall be so aimed and used upon approaching another vehicle that no part of the high-intensity portion of the beam will be directed to the left of the prolongation of the extreme left side of the vehicle, nor more than 100 feet ahead of the vehicle.
(b) No person shall use or shine spotlights or unnecessarily or continuously shine automobile headlights onto park lands except under the direction of a Ranger or except where necessary for preservation of life or property.
(c) Any motor vehicle may be equipped with not more than three State approved auxiliary driving lights mounted on the front of the vehicle, which when used shall conform to State regulations.