Wash. Rev. Code § 46.90.010
In consultation with the chief of the Washington state patrol and the traffic safety commission, the director shall adopt in accordance with chapter 34.05 RCW a model traffic ordinance for use by any city, town, or county. The addition of any new section to, or amendment or repeal of any section in, the model traffic ordinance is deemed to amend any city, town, or county, ordinance which has adopted by reference the model traffic ordinance or any part thereof, and it shall not be necessary for the legislative authority of any city, town, or county to take any action with respect to such addition, amendment, or repeal notwithstanding the provisions of RCW 35.21.180, 35A.12.140, 35A.13.180, and 36.32.120(7).
RCW 46.90.010
Effective dates-1993 c 400: See note following RCW 46.90.005.