Wash. Admin. Code § 308-96A-073
(2) What vehicles qualify for a horseless carriage license plate? Any motor vehicle which is:
[Statutory Authority: RCW 46.04.199, 46.16A.070, 46.18.220, and 46.18.255. WSR 25-21-135, s 308-96A-073, filed 10/21/25, effective 11/21/25. Statutory Authority: RCW 46.01.110, 46.16A.220. WSR 15-10-005, § 308-96A-073, filed 4/22/15, effective 5/23/15. Statutory Authority: RCW 46.16.305 and 46.01.110. WSR 09-06-030, § 308-96A-073, filed 2/24/09, effective 3/27/09. Statutory Authority: RCW 46.01.110, 46.16.335, 46.12.070, 46.16.276. WSR 02-16-071, § 308-96A-073, filed 8/6/02, effective 9/6/02. Statutory Authority: RCW 46.01.110, 46.16.335, 46.16.276. WSR 01-10-069, § 308-96A-073, filed 4/30/01, effective 5/31/01. Statutory Authority: RCW 46.01.110 and 46.16.335. WSR 98-09-024, § 308-96A-073, filed 4/8/98, effective 5/9/98. Statutory Authority: RCW 46.01.110. WSR 97-07-014, § 308-96A-073, filed 3/11/97, effective 4/11/97. Statutory Authority: RCW 46.01.110 and 46.12.070 [ 46.16.335]. WSR 91-04-025, § 308-96A-073, filed 1/29/91, effective 3/1/91.]