At all street intersections no obstruction to vision (other than an existing building, column or tree) exceeding thirty (30) inches in height above the average grade of the street at the property line shall be erected or maintained on any lot, parcel or tract, however stated, within the triangle formed by the street lot lines of the area and a line drawn between the points along the street lot, parcel or tract lines thirty (30) feet distant from their point of intersection.

(Ord. No. 1974-C, § 90.12, 9-17-74)