At the sound of the city fire alarm all persons operating motor or other vehicles on the city streets must take their vehicles immediately to a part of the street where said vehicle will not cause a delay or interfere with the operation of the city fire truck or any member of the Fire Department.  No person shall start or resume the operation of a motor or other vehicle on the streets so long as said operation will interfere with the operation of the fire truck or the duties of any of the members of the Fire Department.
('79 Code, § 14-30)  Penalty, see § 70.99