6-1-420: NUMBER OF LAMPS LIGHTED:
Whenever a motor vehicle equipped with headlamps as herein required is also equipped with any auxiliary lamps or a spot lamp or any other lamp on the front thereof projecting a beam of an intensity greater than three hundred (300) candlepower, not more than a total of four (4) of any such lamps on the front of a vehicle shall be lighted at any one time when upon a highway. (2008 Code § 17-420)