(a)   No person who is the owner, driver or person in charge of trucks, buses, tractors, trailers or semitrailers weighing more than 8,000 pounds, as determined by the vehicle registration issued by the Bureau of Motor Vehicles, shall leave such vehicle parked or standing on any street in the City for a period of more than one hour.
   (b)   Provided, however, that this section shall not apply to trucks or trailers used for conveying the necessary tools and materials to premises where labor using such tools and materials is to be performed during the actual time of parking such trucks or trailers, nor to the actual time during which a motor truck, tractor, trailer or semitrailer is being loaded or unloaded or used to deliver or hoist property or merchandise for the completion of delivery.
(Ord. C76-92. Passed 8-17-92.)