1130.20 CORNER LOT VISIBILITY - CLEAR ZONE.
   On a corner lot in any district nothing shall be erected, placed, planted or allowed to grow in such a manner as to materially impede vision in a clear zone between a height of two and one- half and 10 feet above the center line grades of the intersecting streets in the area bounded by the street lines of such corner lots and a line joining points along such lines 50 feet from the point of intersection. See figure below: