It shall be unlawful for any person owning or having control of any truck, bus, motor home, recreational vehicle or trailer having a carrying capacity in excess of one ton or which is more than eighteen (18) feet in length, seven (7) feet in width or seven (7) feet in height, to park the same upon any street in an R-1, R-2 or R-3 Zone in the city; provided, however, the provisions of this section shall not be deemed to prohibit the parking of any such truck, bus, motor home, recreational vehicle or trailer on any street in an R-1, R-2 or R-3 Zone for the purpose of the actual loading and unloading of goods, wares and merchandise when such vehicle is accompanied by a driver; and provided further, "loading" and "unloading" as used in this section shall be limited to the actual time necessarily consumed in such operation.
(1965 Code of Ordinances, Chapter 20, Article VII, Section 20-185)