No person shall operate or permit to be operated any sound-producing or sound-amplifying apparatus for amplifying the human voice within the limits of any street or public place in the city, or in or upon any vehicle while parked or stopped therein. No motor vehicle shall have any poster, sign, picture, or advertising material on the windshield or glass of the side or rear window thereof; and no person shall, by himself or herself or through his or her agent, place or post any poster, sign, picture, or advertising material on the windshield or glass of either his or her own motor vehicle or that of any other person.
(1973 Code, § 5-629) Penalty, see § 70.99