In all zones which require a front setback, no fence or structure in excess of thirty six inches (36") in height which will prevent a clear view to automobile drivers of approaching vehicles or pedestrians shall be placed on a corner lot within a triangular area formed by the street right-of-way lines and a line connecting them at points forty five feet (45') from the point of intersection of said street lines (clear vision area). Trees and other landscaping plantings are permitted within the clear vision area, provided they are pruned and trimmed to a height of not more than thirty six inches (36") nor less than seven feet (7') above the established grade so as to not obstruct the clear view of motor vehicle drivers. Landscape earth berms shall also be permitted within the clear vision area, provided they are not of such a height as to obstruct the clear view of motor vehicle drivers. (Ord. 97-7-8-8, 7-8-1997)