Police officers shall, whenever conditions require it, direct traffic in accordance with the provisions of the traffic code. Police officers and members of the fire force are hereby authorized in the event of fire, or other emergency or in the safeguarding or expediting of traffic, to direct traffic otherwise than as said code specifically provides. The direction of traffic may be by word or audible signal, by gesture or visible signal, or by any combination thereof.
(Prior Code, § 77.02)