(A)   It is unlawful and an offense for any person, firm or corporation to park any of the following vehicles which exceed a weight limit of one ton on any street or alley in a residential area of the city for more than three consecutive hours:
      (1)   Truck;
      (2)   Bus;
      (3)   Tractor;
      (4)   Trailer; or
      (5)   Any other commercial vehicle.
   (B)   This section does not apply to the following:
      (1)   Any passenger car;
      (2)   Any vehicle on a state highway or county section line road within the city limits; or
      (3)   Any vehicle parked on a street or right-of-way within the city which is parked for the purpose of repair, maintenance or resurfacing of the street or right-of-way or for repair, maintenance or installation of public utilities or for any other governmental purpose.
(`83 Code, § 15-720)  Penalty, see § 72.99