(a) It shall be unlawful for any person or persons to throw, place, drop, leave or otherwise deposit or cause to be thrown, placed, dropped, left or otherwise deposited any trash, mud, dirt, rubbish or other material, in the gutter on any of the streets of the city and leave the same in such gutter for a period of more than 12 hours.
(b) It shall be unlawful to place boxes, barrels, samples, signs, vehicles or any other obstruction upon any sidewalk, street, avenue or alley. However, note that the Zoning Ordinance Sign Code permits signs on sidewalks downtown.
(c) It shall be unlawful for any person to stand or be upon any crossing or sidewalk or street so as unnecessarily to prevent, interrupt or obstruct the travel on or free passage over the same.
(d) It shall be unlawful for any person to construct or maintain or permit the construction or maintenance of any gate opening over or across any sidewalk or so as to open or swing into the street.