No traffic control signal or device may be erected or maintained upon any city street designated as forming a part of the route of a primary state highway or secondary state highway unless first approved by the state department of transportation.

[ 1984 c 7 s 62; 1965 ex.s. c 155 s 14.]

Notes:

Local authorities to provide stop signs at intersections with increased speed highways: RCW 46.61.435.