No person shall park or leave any bicycle or wheeled toy upon any street or alley, nor upon any sidewalk in any business district or adjacent to any place of public assembly in such manner as to obstruct or hinder the free passage of pedestrians or other vehicles or devices permitted to use them. Any bicycle or wheeled toy found in violation of this section may be impounded by the police department and returned to the owner under such reasonable conditions as may be established by the chief of police. (Ord. 432 § 2(part), 1982).