§ 70.21 ESTABLISHMENT AND MAINTENANCE OF TRAFFIC-CONTROL DEVICES.
   (A)   The city shall establish and maintain all official traffic-control devices necessary within the city.
   (B)   All traffic-control devices, including signs, shall be employed to indicate one particular warning or regulation, shall be uniform, and as far as possible shall be placed uniformly.
   (C)   All traffic-control devices and signs shall conform to required state specifications.