Tap any paragraph to write a margin note. Your notes collect in the Desk below the text and file under cases with @. The side-by-side margin rail opens on a larger screen.

Code · Washington · Title 46 — Motor Vehicles · Chapter 46.37

RCW 46.37.090

803 words·~4 min read·/wa/title-46/chapter-46-37/46-37-090·

A research copy — for the controlling text, always check the official state or federal source. Not legal advice.

In addition to other equipment required in RCW 46.37.040 , 46.37.050 , 46.37.060 , and 46.37.070 , the following vehicles shall be equipped as herein stated under the conditions stated in RCW 46.37.080 , and in addition, the reflectors elsewhere enumerated for such vehicles shall conform to the requirements of RCW 46.37.120 (1).
(1)Buses, trucks, motor homes, and motor vehicles with mounted campers eighty inches or more in over-all width:
(a)On the front, two clearance lamps, one at each side, and on vehicles manufactured or assembled after January 1, 1964, three identification lamps meeting the specifications of subdivision
(6)[subsection (7)] of this section;
(b)On the rear, two clearance lamps, one at each side, and after January 1, 1964, three identification lamps meeting the specifications of subdivision
(6)[subsection (7)] of this section;
(c)On each side, two side marker lamps, one at or near the front and one at or near the rear;
(d)On each side, two reflectors, one at or near the front and one at or near the rear.
(2)Trailers and semitrailers eighty inches or more in over-all width:
(a)On the front, two clearance lamps, one at each side;
(b)On the rear, two clearance lamps, one at each side, and after January 1, 1964, three identification lamps meeting the specifications of subdivision
(6)[subsection (7)] of this section;
(c)On each side, two side marker lamps, one at or near the front and one at or near the rear;
(d)On each side, two reflectors, one at or near the front and one at or near the rear: PROVIDED, That a mobile home as defined by RCW 46.04.302 need not be equipped with two side marker lamps or two side reflectors as required by subsection
(c)and
(d)of this section [(c) and
(d)of this subsection] while operated under the terms of a special permit authorized by RCW 46.44.090 .
(3)Truck tractors:
On the front, two cab clearance lamps, one at each side, and on vehicles manufactured or assembled after January 1, 1964, three identification lamps meeting the specifications of subdivision
(6)[subsection (7)] of this section.
(4)Trailers, semitrailers, and pole trailers thirty feet or more in over-all length:
On each side, one amber side marker lamp and one amber reflector, centrally located with respect to the length of the vehicle: PROVIDED, That a mobile home as defined by RCW 46.04.302 need not be equipped with such side marker lamp or reflector while operated under the terms of a special permit authorized by RCW 46.44.090 .
(5)Pole trailers:
(a)On each side, one amber side marker lamp at or near the front of the load;
(b)One amber reflector at or near the front of the load;
(c)On the rearmost support for the load, one combination marker lamp showing amber to the front and red to the rear and side, mounted to indicate maximum width of the pole trailer.
(6)Boat trailers eighty inches or more in overall width:
(a)One on each side, at or near the midpoint, one clearance lamp performing the function of both a front and rear clearance lamp;
(b)On the rear, after June 1, 1978, three identification lamps meeting the specifications of subsection
(7)of this section;
(c)One on each side, two side marker lamps, one at or near the front and one at or near the rear;
(d)On each side, two reflectors, one at or near the front and one at or near the rear.
(7)Whenever required or permitted by this chapter, identification lamps shall be grouped in a horizontal row, with lamp centers spaced not less than six nor more than twelve inches apart, and mounted on the permanent structure of the vehicle as close as practicable to the vertical centerline: PROVIDED, HOWEVER, That where the cab of a vehicle is not more than forty-two inches wide at the front roofline, a single identification lamp at the center of the cab shall be deemed to comply with the requirements for front identification lamps.
[ 1977 ex.s. c 355 s 9 ; 1963 c 154 s 7 ; 1961 c 12 s 46.37.090 . Prior: 1955 c 269 s 9 ; prior: 1947 c 267 s 3, part; 1937 c 189 s 17, part; Rem. Supp. 1947 s 6360-17, part; RCW 46.40.040 , part; 1933 c 156 ss 5, part, 6, part; 1929 c 178 ss 7, part, 8, part; 1927 c 309 ss 27, part, 28, part; RRS ss 6362-27, part, 6362-28, part; 1921 c 96 s 22, part; 1919 c 59 s 10, part; 1917 c 155 s 15, part.]
Notes:
Severability — 1977 ex.s. c 355: See note following RCW 46.37.010 .
Effective date — 1963 c 154: See note following RCW 46.37.010 .
★   the supreme law of the land   ★
Don't Tread on Me
E Pluribus Unum — out of many, one

"If you don't know your rights, you don't have any."

Marginalia · a citizen's law index
A research desk, not legal advice. Always read the cited source before relying on a summary.
Questions or an issue? support@self-law.org
disclaimerMarginalia is a research index, not a law firm. Nothing on this site is legal, tax, or financial advice and no attorney–client relationship is formed by using it. Statutes, regulations, and case law change; summaries, search results, AI output, and member posts may be incomplete, out of date, or wrong. Any interpretation drawn from material on this site should be validated by a licensed attorney in your jurisdiction before you act on it.