(a) Spot lamps. Any motor vehicle, except a public utility company maintenance 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. A public utility company maintenance vehicle may be equipped with more than one spot lamp, but all lighted spot lamps shall be aimed and used in conformity to the requirements of this subsection (a).
(b) 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.
(c) Auxiliary passing lamp. 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 auxiliary passing lamp shall meet the requirements and limitations set forth in this article.
(d) Auxiliary driving lamp. 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 such auxiliary driving lamp shall meet the requirements and limitations set forth in this article.
(W.Va. Code § 17C-15-17)