§ 17-4.  Authority of police and fire department officials.
   (a)   The officers of the police department, and all such officers as are assigned by the chief of police, shall enforce all street traffic laws of this city and all of the state vehicle laws applicable to street traffic in this city.
   (b)   Officers of the police department and all such officers as are assigned by the chief of police are hereby authorized to direct all traffic by voice, hand or signal in conformity with traffic laws, provided that in the event of a fire or other emergency, or to expedite traffic, or to safeguard pedestrians, officers of the police department may direct traffic as conditions may require notwithstanding the provisions of the traffic laws.
   (c)   Officers of the fire department, when at the scene of a fire, may direct or assist the police in directing traffic in the immediate vicinity.
(Code 1977, § 50.030(1), (2), (3))
   Cross reference--Police and fire departments generally, § 2-111 et seq.