Washington Revised Code Title 46. Motor Vehicles § 46.37.040. Head lamps on motor vehicles

(1) Every motor vehicle shall be equipped with at least two head lamps with at least one on each side of the front of the motor vehicle, which head lamps shall comply with the requirements and limitations set forth in this chapter.

(2) Every head lamp upon every motor vehicle shall be located at a height measured from the center of the head lamp of not more than fifty-four inches nor less than twenty-four inches to be measured as set forth in RCW 46.37.030(2).