(a) Spot lamps and auxiliary lamps.
(1) SPOT LAMPS. Any motor vehicle may be equipped with not to exceed one spot lamp and every lighted spot lamp 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.
(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 12 inches nor more than 30 inches 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 25 feet ahead project higher than a level of four inches below the level of the center of the lamp from which it comes.
(3) AUXILIARY PASSING LAMPS. Any motor vehicle may be equipped with not to exceed one auxiliary passing lamp mounted on the front at a height not less than 24 inches nor more than 42 inches above the level surface upon which the vehicle stands and every such auxiliary passing lamp shall meet the requirements and limitations set forth in this chapter.
(4) AUXILIARY DRIVING LAMPS. Any motor vehicle may be equipped with not to exceed one auxiliary driving lamp mounted on the front at a height not less than 16 inches nor more than 42 inches above the level surface upon which the vehicle stands and every auxiliary driving lamp shall meet the requirements and limitations set forth in this chapter.
(b) Signal lamps and signal devices.
(1) Any motor vehicle may be equipped and when required under this division shall be equipped with the following signal lamps or devices:
a. A stop lamp on the rear which shall emit a red or yellow light and which shall be actuated upon application of the service (foot) brake and which may but need not be incorporated with a tail lamp.
b. A lamp or lamps or mechanical signal device capable of clearly indicating any intention to turn either to the right or the left and which shall be visible both from the front and rear.
(2) A stop lamp shall be plainly visible and understandable from a distance of 100 feet to the rear both during normal sunlight and at nighttime and a signal lamp or lamps indicating intention to turn shall be visible and understandable during daytime and nighttime from a distance of 100 feet both to the front and rear. When a vehicle is equipped with a stop lamp or other signal lamps, such lamp or lamps shall at all times be maintained in good working condition. No stop lamp or signal lamp shall project a glaring or dazzling light.
(3) All mechanical signal devices shall be self-illuminated when in use at the time mentioned in subsection (a) of Section 32-5-240 .
(c) Additional lighting equipment.
(1) Any motor vehicle may be equipped with not more than two side cowl or fender lamps which shall emit an amber or white light without glare.
(2) Any motor vehicle may be equipped with not more than one running-board courtesy lamp on each side thereof which shall emit a white or amber light without glare.
(3) Any motor vehicle may be equipped with not more than two back-up lamps either separately or in combination with other lamps, but any such back-up lamp shall not be lighted when the motor vehicle is in forward motion.
(d) Special restriction on lamps.
(1) Any lighted lamp or illuminated device upon a motor vehicle other than head lamps, spot lamps, auxiliary lamps, or flashing front direction signals which projects a beam of light of an intensity greater than 300 candlepower shall be so directed that no part of the beam will strike the level of the roadway on which the vehicle stands at a distance of more than 75 feet from the vehicle.
(2) No person shall drive or move any vehicle or equipment upon any highway with any lamp or device thereon displaying a red light visible from directly in front of the center thereof. This section shall not apply to authorized emergency vehicles.
(3) Any vehicle may be equipped with flashing lamps which may be used for the purpose of warning the operators of other vehicles of the presence of a vehicular traffic hazard requiring the exercise of unusual care in approaching, overtaking, or passing, and when so equipped may display such warning in addition to any other warning signals required by this section. The lamps used to display such warning to the front shall be mounted at the same level and as widely spaced laterally as practicable and shall display simultaneously flashing white or amber lights, or any shade of color between white and amber.
The lamps used to display such warning to the rear shall be mounted at the same level and as widely spaced laterally as practicable, and shall show simultaneously flashing amber or red lights, or any shade of color between amber and red. These warning lights shall be visible from a distance of not less than 1,500 feet under normal atmospheric conditions at night.
(4) Flashing lights may be used on motor vehicles as a means of indicating a right or left turn; a stop lamp may pulsate with different intensities provided that it meets at all intensities the provisions of subdivision (2) of subsection (b) of this section; and the warning lights on emergency vehicles may flash.
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