All traffic control signs, signals and devices shall conform to the manual and specifications approved by the State Road Commission or to resolutions adopted by Council. All signs and signals required under this Traffic Code for a particular purpose shall, so far as practicable, be uniform as to type and location throughout the Municipality. All the traffic control devices so erected and not inconsistent with the provisions of State law or this Traffic Code shall be official traffic control devices.
(1974 Code Sec. 3-37)