Within five feet of any driveway, no fence, wall or hedge or other dense vegetation shall be permitted within five feet of the front line of any lot which is subject to front yard requirements if said fence, wall, hedge or vegetation is more than two feet, six inches in height, unless same is arranged so as to provide 50 percent or more of distributed open space so as to prevent dense blind areas exceeding eight inches in width along its horizontal measurement. (Ord. 973 § 1, 1966; prior code § 19.15.2).