No wagons, drays or other vehicles shall be backed into the curb on any of the streets of the city, except for the purpose of loading or unloading and then only where the load is of such character and weight as to necessitate the loading or unloading thereof upon the vehicle placed in such position. In the event of necessity to load or unload by backing the vehicle to the curb, such vehicle shall not be permitted to stand in such position except during the actual time necessary to load or unload; and if such necessary time will exceed 15 minutes, special permission shall be obtained from the Chief of Police before the vehicle is backed into such position. All such vehicles shall be moved to a position parallel with the curb as soon as is reasonably possible; and in all cases where the wagon or other vehicle is drawn by horses or tractor and is backed into the curb as herein provided, the horses or tractor shall be turned so as to face parallel with moving traffic. Wherever alleys are available, all loading and unloading must be on the alley and not by parking on or using a street for such purpose. It shall be unlawful, at all times and places, to park any truck or commercial vehicle in the manner known as “double parking”.
(1991 Code, § 19-6) Penalty, see § 72.999