The city manager is hereby authorized to do the following acts, when directed so to do by the city council:
(1) To place markers and lines upon the surface of the roadway, crosswalks, and at intersections where there is particular danger to pedestrians crossing the roadway.
(2) To establish safety zones of such kind and character and at such places where the same are necessary for the protection of pedestrians.
(Prior Code, § 18-192)