(a) A motor vehicle may be equipped with not more than 2 spot lamps, except that a motorcycle shall not be equipped with more than 1 spot lamp, and every lighted spot lamp shall be so aimed and used upon approaching another vehicle that no part of the beam will be directed into the eyes of the approaching driver. Spot lamps may not emit other than either a white or amber light.

    (b) A motor vehicle may be equipped with not more than 2 fog lamps mounted on the front at a height of not less than 12 inches nor more than 30 inches above the level surface upon which the vehicle stands, which fog lamps shall be 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 4 inches below the level of the center of the lamp from which it comes. Lighted fog lamps meeting the requirements of this subsection may be used with lower head-lamp beams.