Any motor vehicle may be equipped with not to exceed two (2) spot lamps and every lighted spot lamp shall be aimed and used upon approaching another vehicle so 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 one hundred feet (100?) ahead of the vehicle. Violations of this section are subject to fines enumerated in § 31-41.1-4.