§ 39-21-17 — Spot lamps and auxiliary lamps

1. Spot lamps. Any motor vehicle may be equipped with not to exceed two spot lamps
and every lighted spot lamp must be so aimed and used so that no part of the
high-intensity portion will strike the windshield, or any windows, mirror, or occupant of
another vehicle in use.
2. Fog lamps. Any motor vehicle may be equipped with not to exceed two fog lamps
mounted on the front at a height not less than twelve inches [30.48 centimeters] nor
more than thirty inches [76.2 centimeters] above the level surface upon which the
vehicle stands and so aimed that when the vehicle is not loaded none of the
high-intensity portion of the light to the left of the center of the vehicle shall at a
distance of twenty-five feet [7.62 meters] ahead project higher than a level of four
inches [10.76 centimeters] below the level of the center of the lamp from which it

comes. Lighted fog lamps meeting the above requirements may be used with lower
headlamp beams as specified in subsection 2 of section 39-21-20.
3. Auxiliary passing lamps. Any motor vehicle may be equipped with not to exceed two
auxiliary passing lamps mounted on the front at a height not less than twenty-four
inches [60.96 centimeters] nor more than forty-two inches [106.68 centimeters] above
the level surface upon which the vehicle stands. The provisions of section 39-21-20
apply to any combination of headlamps and auxiliary passing lamps.
4. Auxiliary driving lamps. Any motor vehicle may be equipped with not to exceed two
auxiliary driving lamps. Any auxiliary driving lamp mounted at a height of less than
sixteen inches [40.64 centimeters] or more than forty-two inches [106.68 centimeters]
above the level surface upon which the vehicle stands may not be lighted when the
vehicle is used upon a highway. The provisions of section 39-21-20 apply to any
combination of headlamps and auxiliary driving lamps.