No person shall drive or ride any animal, bicycle, rollerskates, rollerblades, or skateboard upon any sidewalk in any area of the City where the same is prohibited, except across a sidewalk at established crossings, and no person shall obstruct any sidewalk or street by games of any kind, playing of ball, quoits, marbles, rolling of hoops, flying of kites, or annoy or obstruct the free travel of any foot passenger in commercial zones. Parked bicycles shall not obstruct sidewalks or obstruct the ingress or egress of doorways or pedestrian openings. (Ord. 91-07, 1991: prior code § 21-22)