Keeping street corners clear for safe views

(a) No wall, fence, sign, hedge, tree, shrubbery, or other similar structure or plant growth, or any part thereof, that is more than 3 feet above the nearest edge of the abutting roadway shall be erected, planted, or maintained at the corner of any street intersection within the area of a triangle, the apex of which is at the intersections of the property lines at such corner, and consisting of two sides each extending 30 feet from such apex along the respective property lines and the third side being a straight line connecting the respective end points of the two sides; provided that the height of any such wall, fence, sign, hedge, tree, shrubbery, or similar structure or plant growth, subject to any height limitation imposed by any law, ordinance or regulation, may exceed 3 feet upon determination by the director of transportation services that the same does not obstruct vision or constitute a traffic hazard. (b) The chief of police shall cause a notice to be served upon the owner or occupant of all property where a violation of the above provision exists, requesting the removal of the obstruction therefrom within one week from the service of such notice. )