No trees, bushes, shrubs or plants located on any corner lot in the City that bear foliage which would obstruct the view of a driver of a vehicle approaching a street intersection, and no trees, bushes, shrubs or plants located on any lot in the City and extending in front of a building set-back line of a subdivision that would obstruct the view of a driver of a vehicle approaching a street from a public or private driveway, shall be permitted to grow to a height of more than three feet above the grade of the surface of the roadway.
(1979 Code Sec. 13.40.070)