Wash. Rev. Code » Title 46 · Chapter 46.37
Revised Code of Washington

Wash. Rev. Code § 46.37.300 (2026)

Standards for lights on snow-removal or highway maintenance and service equipment

✓ current as of May 2026
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(1) The state patrol shall adopt standards and specifications applicable to head lamps, clearance lamps, identification and other lamps on snow-removal and other highway maintenance and service equipment when operated on the highways of this state in lieu of the lamps otherwise required on motor vehicles by this chapter. Such standards and specifications may permit the use of flashing lights for purposes of identification on snow-removal and other highway maintenance and service equipment when in service upon the highways. The standards and specifications for lamps referred to in this section shall correlate with and, so far as possible, conform with those approved by the American association of state highway officials.
(2) It shall be unlawful to operate any snow-removal and other highway maintenance and service equipment on any highway unless the lamps thereon comply with and are lighted when and as required by the standards and specifications adopted as provided in this section.
[ 1987 c 330 s 715; 1963 c 154 s 20; 1961 c 12 s 46.37.300. Prior: 1955 c 269 s 30.]

Notes:

Construction—Application of rules—Severability—1987 c 330: See notes following RCW 28B.12.050.
Effective date—1963 c 154: See note following RCW 46.37.010.
Notes of Decisions
Cited in 3 cases, 1971–2004 · leading case: Caldwell v. Dep't of Transp., 123 Wash. App. 693 (Wash. Ct. App. 2004).
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Caldwell v. Dep't of Transp., 123 Wash. App. 693 (Wash. Ct. App. 2004). “(2) The driver of a vehicle shall yield the right of way to any authorized vehicle obviously and actually engaged in work upon a highway whenever such vehicle displays flashing lights meeting the requirements of RCW 46.37.300. *700 RCW 46.61.215 (emphasis added).”
Caldwell v. Wash. State Dept. of Transp., 96 P.3d 407 (Wash. Ct. App. 2004). “(2) The driver of a vehicle shall yield the right of way to any authorized vehicle obviously and actually engaged in work upon a highway whenever such vehicle displays flashing lights meeting the requirements of RCW 46.37.300. RCW 46.61.215 (emphasis added).”
Blackburn v. State, 481 P.2d 448 (Wash. 1971). “The commission adopted these provisions when, in compliance with RCW 46.37.300, it promulgated its standards and specifications for snow removal equipment.”
Annotations are extracted automatically from the opinions in the Syfert caselaw corpus and ranked by authority, recency, and treatment. Dots show Syfertize treatment of the citing case itself.