Wash. Rev. Code § 46.37.185
Firefighters, when approved by the chief of their respective service, shall be authorized to use a green light on the front of their private cars when on emergency duty only. Such green light shall be visible for a distance of two hundred feet under normal atmospheric conditions and shall be of a type and mounting approved by the Washington state patrol. The use of the green light shall only be for the purpose of identification and the operator of a vehicle so equipped shall not be entitled to any of the privileges provided in RCW 46.61.035 for the operators of authorized emergency vehicles.
RCW 46.37.185
Intent-Finding-2007 c 218: See note following RCW 41.08.020.
Construction-Application of rules-Severability-1987 c 330: See notes following RCW 28B.12.050.