It is unlawful for any Person, association, partnership or corporation to move, place, park or stop, or cause to be moved, placed, parked or stopped, upon any street or public right-of-way in any residential area of the City any automobile, truck, motorcycle, wagon, or any other vehicle which bears or carries printed, written or pictorial advertising matter, if the primary purpose of said vehicle is the display of advertising material. No such commercial advertising display or sign shall be permitted on any portion of the public right-of-way, whether affixed to such vehicles or borne by a pedestrian walking, standing or stopped on the public sidewalk, or displayed in any other manner. (Ord. 921 § 1; prior code § 3.3(B)).