Arizona Revised Statutes Title 28. Transportation § 28-946. Number of driving lamps required or permitted

A. At all times provided in § 28-922, at least two lighted lamps shall be displayed, one on each side at the front of a motor vehicle other than a motorcycle or motor driven cycle, except when the vehicle is parked subject to the rules governing lights on parked vehicles.

B. If a motor vehicle equipped with head lamps as required by this article is also equipped with any auxiliary lamps, spot lamp or other lamp on the front of the motor vehicle projecting a beam of intensity greater than three hundred candlepower, not more than four of any such lamps on the front of a vehicle shall be lighted at any one time when on a highway.