When so posted, it is an infraction for the driver of a vehicle to stand or park such vehicle for a period of time longer than is permitted by the posted sign for the loading or unloading of passengers, or for the driver to stand or park any freight-carrying vehicle for a period of time longer than is necessary to load, unload and deliver materials in any place designated as a loading zone and marked as such. (Ord. 2019-07 § 1 (Exh. A (part)); Code 1975 § 11-344(C))