§ 71.20 AUTHORITY TO INSTALL TRAFFIC-CONTROL DEVICES.
   (A)   The Board of Public Works and Safety shall place and maintain official traffic-control devices when and as required under this code to make its provisions effective.
   (B)   It may place and maintain any additional official traffic-control devices as it may deem necessary to regulate, warn or guide traffic under this code or the state vehicle laws.
(`81 Code, § 14-70)