Washington Administrative Code
Title 204 - State Patrol (Equipment) (See also Titles 212, 446 and 448)
Chapter 204-21 - Lighting requirements
Section 204-21-120 - Cornering lamps

(1) Must meet SAE Standard J852.

(2) Must be on the front of the vehicle near the side or the side near the front.

(3) Must, if they have means to adjust and aim the lamp, be mounted so the center of the high intensity portion of the beam is within 40 to 50 degrees from the longitudinal axis of the vertical toward the front. The vertical aim must be within the center of the high intensity zone, 10 to 14 inches below the level of the lamp center.

(4) Must, if they don't have aiming mechanisms, be mounted in a fixed position on the vehicle in accordance with the manufacturer's instructions.