Auxiliary driving lamps must:
- (1) Meet SAE Standard J581.
- (2) Be white in color.
- (3) Provide illumination forward the vehicle.
- (4) Be wired so that the taillights are lighted whenever the driving lamps are lighted. If driving lamps are not wired to operate only with headlamp high beams, a separate switch and indicator lamp must be provided to operate the driving lamps.
- (5) Be aimed with the center of the high intensity zone on a vertical line straight ahead of the lamp center and at the level of the lamp center.
- (6) Not be used alone in lieu of headlamps, but may be used to supplement the upper beam of a standard headlight system as specified in RCW 46.37.220, and may only be used to supplement the upper beam of a standard headlamp system.
[Statutory Authority: RCW 46.37.005 and 46.37.320. WSR 08-19-104, § 204-21-090, filed 9/17/08, effective 10/18/08.]