(A) All traffic-control signs, signals and devices shall conform to the specifications prescribed by the Indiana Department of Highways and its manual on uniform traffic-control devices. 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.
(B) All traffic-control devices so erected and not inconsistent with the provisions of state law or this chapter shall be official traffic-control devices.