(1) No signs shall be placed on or about public property or within any public right-of-way, unless otherwise permitted. Such signs may be deemed refuse and subject to removal by the Director.

(2) No sign or sign structure shall be erected in such a manner that any portion of its surface or supports will interfere with free use of all fire appliances, including hydrants, standpipes, automatic fire sprinkler connections, and the like. Fire lanes shall not be obstructed by the placement of any sign or sign structure.

(3) No sign shall obstruct any window to such an extent that any light or ventilation is reduced to a point below that required by any law or ordinance.