The Police Department shall enforce the provisions of this Traffic Code; provided that, in the event of fire or other emergency or to expedite traffic or safeguard pedestrians, officers of the Police or Fire Department may direct traffic, as conditions may require, notwithstanding the provisions of this article. For such purpose the Director of Public Safety may designate such number of the members of the Fire Department as he deems necessary, with authority to arrest on view any person who violates any provision of this article or temporary regulations of the Chief of Police or interferes or may interfere with the fighting of a fire. The persons so designated from the Fire Department shall serve without pay.
(1944 Code Ch. 18 §6.)