In the event a highway includes two or more separate roadways and traffic is restricted to one direction upon any such roadway, no person shall stand or park a vehicle upon the left-hand side of such one-way roadway unless signs or marks are placed to permit such standing or parking. The City Manager, subject to any directions which the Council may give by motion or resolution, is authorized to determine when standing or parking may be permitted upon the left-hand side of any such one-way roadway and to have signs or marks placed giving notice thereof.
(`90 Code, § 20-132)