Where property abuts the intersection of two streets or the intersection of an alley and a street, an unobstructed view shall be provided and maintained at all times within the sight distance triangle and vertical clear zone as described in this chapter.

The sight distance triangle is the horizontal area at the intersection of two streets. Two sides of the triangle are measured 30 feet from the corner intersection along the curb and gutter flow line, or if no curb exists, from the edge of pavement. Where an intersection has rounded corners, the sides will be extended in a straight line to a point of intersection.

The vertical clear zone is the area above a sight distance triangle in which obstructions shall be minimized to provide a clear view.

1. Height. The vertical clear zone is measured vertically from the curb and gutter flow line, or if no curb exists, from the edge of pavement. The clear zone is the area between a height of three feet and seven feet.
2. Obstruction Prohibited. The vertical clear zone shall be free of obstructions, including but not limited to fences, walls, landscaping, signs, structures, tree canopies or parked vehicles.
3. Exemption of Certain Point Obstructions. Certain objects are considered point obstructions and are permitted because a driver can move slightly and be able to see around them. The following objects are permitted with in the vertical clear zone.
   1. Poles with a diameter of less than one foot that support an approved sign, flag or similar devices.
   2. Official traffic control devices.
   3. Utility equipment, such as but not limited to poles, transformers, distribution equipment, etc.
   4. Mailboxes.
   5. Trees that are devoid of branches between three and seven feet from the ground and that are spaced in manner that minimizes visual obstruction.
   6. Any obstruction that was permitted by City Code on the date that it was installed.