Wash. Admin. Code § 200-200-265
(1) A vehicle may be issued a permit to park in a restricted parking area or other area for the purpose of participating as a vendor or sponsor of an event or providing transportation to an event permitted under chapter 200-220 WAC. Parking permits shall only be issued to the registered vehicle owner or operator who is participating as an event vendor or sponsor and shall:
[Statutory Authority: RCW 43.19.125, 46.08.150, and 43.19.011. WSR 21-06-017, § 200-200-265, filed 2/19/21, effective 4/1/21.]