Wash. Rev. Code § 46.18.255
(1) A registered owner may apply to the department, county auditor or other agent, or subagent appointed by the director for a horseless carriage license plate for a motor vehicle that is at least forty years old. The motor vehicle must be operated primarily as a collector vehicle and be in good running order. The applicant for the horseless carriage license plate shall:
(2) Horseless carriage license plates:
[ 2020 c 18 s 15; 2011 c 171 s 71; 2010 c 161 s 623.]
Explanatory statement—2020 c 18: See note following RCW 43.79A.040.
Intent—Effective date—2011 c 171: See notes following RCW 4.24.210.
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.