No substantial obstructions, such as structures, parking or vegetation, shall be permitted
in any district between the heights of two and one-half feet and ten feet above the
plane through the mean curb grades adjacent to the triangular space formed by any
two existing or proposed intersecting street or alley right-of-way lines and a line
joining points on such lines located a minimum of 15 feet from their intersection.
In the case of arterial streets intersecting with other arterial streets or railways,
the corner cutoff distances establishing the triangular vision clearance space shall
be increased to 50 feet. These restrictions may be modified in the B-3 district on
a case-by-case basis, when, in the opinion of the plan commission, such modifications
would further the objectives of the district. Necessary utility poles and traffic,
directional and street name signs approved by the public agency having jurisdiction
may be permitted within such triangular areas. Vision triangles at intersections with
state and county trunk highways shall meet the vision corner requirements of the state
or county highway agency that has jurisdiction, but in no case shall they be less
than those specified herein.
