(A) All motor trucks, tractors, trailers, buses, house trailers, semitrailers, farm machinery and equipment having a load capacity in excess of 1½ tons, or a length in excess of 19 feet, or a height in excess of seven feet or a width in excess of seven feet shall not park or partially park upon the public streets, alleys and highways of the city for a period of more than two hours out of each 24 hours. Those vehicles may park in those areas set out in Chapter 75, Schedule IV for the purpose of loading or unloading freight between the hours of 6:00 p.m. and 11:00 a.m.; provided, further, the above vehicles may park in those areas and at those times as may be approved by the Common Council and designated by the Board of Public Works and Safety.
(B) In places where, and at hours when, stopping for the loading or unloading of merchandise or materials is permitted, vehicles used for the transportation of merchandise or materials may back into the curb to take on or discharge loads when the owner of that vehicle holds a permit issued by the Police Department granting him that privilege. The permit shall be either in the possession of the drive or on the vehicle at the time the vehicle is backed against the curb to take on or discharge a load, and no owner or driver shall violate any of the special terms or conditions of any such special permit.
('71 Code, § 73.01) Penalty, see § 70.99