RCW 46.16A.350: Temporary letter of authority for movement of unregistered vehicle for special community activity.

The department may issue a temporary letter of authority authorizing the movement of an unregistered vehicle or the temporary use of a special plate for the purpose of promoting or participating in an event such as a parade, pageant, fair, convention, or other special community activity. The letter of authority may not be issued to or used by anyone for personal gain, but public identification of the sponsor or owner of the donated vehicle shall not be considered to be personal gain.