In all zones, no obstruction to public or private street views in excess of two feet (2') in height above road grade shall be placed on any corner lot within a triangular area formed by the streets at the property line and a line connecting them at points twenty five feet (25') from the intersection of the street right of way lines, except a reasonable number of trees pruned low enough to permit automobile drivers an unobstructed view. (Ord., 1-18-2005)