RCW 46.61.755: Traffic laws apply to persons riding bicycles.

(1) Every person riding a bicycle upon a roadway shall be granted all of the rights and shall be subject to all of the duties applicable to the driver of a vehicle by this chapter, except as to special regulations in RCW 46.61.750 through 46.61.780 , except as provided in RCW 46.61.190 , and except as to those provisions of this chapter which by their nature can have no application. (2) Every person riding a bicycle upon a sidewalk or crosswalk must be granted all of the rights and is subject to all of the duties applicable to a pedestrian by this chapter.