A. The manager may designate any street or alley as one-way and, when so designated, the superintendent of public works shall place and maintain signs giving notice thereof, and no such regulation of traffic movement shall be effective unless such signs are in place. Signs indicating the direction of lawful traffic movement shall be placed at every intersection where movement of traffic in the opposite direction is prohibited.

B. Upon those streets and parts of streets and in those alleys designated as one-way, vehicular traffic shall move only in the indicated direction when signs or other markings indicating the direction of traffic are erected and maintained at every intersection where movement of traffic in the opposite direction is prohibited.

C. The manager is hereby authorized to determine and designate streets, parts of streets, or specific lanes thereon upon which vehicular traffic shall proceed in one direction during one period and the opposite direction during another period of the day and shall place and maintain appropriate markings, signs, barriers, or other devices to give notice thereof. The superintendent of public works may erect signs temporarily designating lanes to be used by traffic moving in a particular direction, regardless of the center line of the roadway.