The Chief of Police and all regular or special police officers are hereby authorized, empowered, and ordered to exercise all powers and duties with relation to the management of street traffic and to direct, control, stop, restrict, and regulate, and, when necessary, temporarily divert or exclude, in the interest of public safety, health, and convenience, the movement of pedestrians, animals, and vehicular traffic of every kind, in streets, parks, and on bridges in the city.
(Prior Code, § 70.90)