Except when directed to proceed by a flagger, police officer, or firefighter, the driver of a vehicle approaching an intersection controlled by a traffic control signal that is temporarily without power on all approaches or is not displaying any green, red, or yellow indication to the approach the vehicle is on, shall consider the intersection to be an all-way stop. After stopping, the driver shall yield the right-of-way in accordance with RCW 46.61.180(1) and 46.61.185.