Wash. Rev. Code § 46.16A.450
(1) Trailers that are towed in combination with a truck, motor truck, truck tractor, road tractor, or tractor and used to transport loads in excess of forty thousand pounds combined gross weight may be issued a permanent license plate and registration. The permanent license plate and registration is valid until the trailer is sold, permanently removed from the state, or otherwise disposed of by the registered owner. The owner of the trailer shall:
[ 2010 c 161 s 418; 1998 c 321 s 32 (Referendum Bill No. 49, approved November 3, 1998); 1993 c 123 s 4. Formerly RCW 46.16.068.]
Effective date—Intent—Legislation to reconcile chapter 161, Laws of 2010 and other amendments made during the 2010 legislative session—2010 c 161: See notes following RCW 46.04.013.
Purpose—Severability—1998 c 321: See notes following RCW 82.14.045.
Contingent effective dates—1998 c 321 ss 23-42: See note following RCW 35.58.410.
Effective date of 1993 c 102 and c 123—1993 sp.s. c 23: See note following RCW 46.16A.455.