It shall be unlawful for any private ambulance or other private emergency vehicle to respond or arrive at the scene of an accident, sounding any audible signal by bell, siren or exhaust whistle and flashing any red light without being summoned by the Police or Fire Department of the city.
('72 Code, § 4-20) (Ord. 2249, passed - - ; Am. Ord. O-93-51, passed 10-20-93) Penalty, see § 114.99