(A) It shall be the duty of the police department of the city to enforce all traffic laws of the city and all state vehicle laws applicable to street traffic of the city.
(B) The Chief of Police and police officers of the city are authorized to direct all traffic in accordance with the provisions of this chapter and applicable state laws or in emergencies as public safety or convenience may require. It shall be unlawful for any person to fail or refuse to comply with any lawful order, signal, or direction of a city police officer. Except in case of emergency, it shall be unlawful for any person not authorized by a city police officer to direct or attempt to direct traffic.
(C) The fire department officer in command, or any fireman designated by him, may exercise the powers and authority of a police officer in directing traffic at the scene of any fire or where the fire department has responded to any emergency call for so long as fire department equipment is on the scene, in the absence of or in assisting the city police.
(1985 Code)