Obstructing vision at intersection.
Fences, walls, screens, hedges, trees, brush, shrubs, signs, carports, and other structures or growth are deemed to be obstructions to the vision of motorists when they are so erected, planted, or maintained as to interfere with sight lines at an elevations between two (2) feet and eleven (11) feet above the top of the adjacent roadway for a distance of twenty-five (25) feet from the intersection and in the resulting triangle. Posts or poles of less than twelve (12) inches in diameter will be permitted within this area.