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(A) The Superintendent of Public Works shall place and maintain traffic-control signs, signals, and devices when and as required under this chapter to make effective the provisions of this chapter, and may place and maintain any additional traffic-control devices as he may deem necessary to regulate traffic under this chapter or under state law, or to guide or warn traffic.
(B) All traffic-control signs, signals, and devices shall conform to the manual and specifications approved by the Department of Transportation and Bureau of Highways. All signs and signals required hereunder for a particular purpose shall so far as practicable be uniform as to type and location throughout the city. All traffic-control devices so erected and not inconsistent with the provisions of state law or this chapter shall be official traffic-control devices.