(1) On all lots or parcels of land, no obstruction that will obscure the view of motor vehicle drivers shall be placed within the triangular area formed by joining points measured 30 feet along the property line from the intersection of two streets, or by joining points measured 10 feet back along a driveway and lot line from the point of intersection of the driveway and lot line. On a site-specific basis; as an alternative, the City Engineer may apply AASHTO standards based on a site-specific evaluation of intersection visibility. (See Figure 5-1.)

(2) Within the area of the triangle there shall be no sight-obscuring or partly obscuring wall, fence, sign, or foliage higher than 36 inches above curb grade or, in the case of trees, foliage lower than six feet.

(3) Vertical measurement shall be made from the top of the curb on the street adjacent to the nearest street of the triangle or, if no curb exists, from the edge of the nearest traveled way.