1.   In all districts, on any corner lot at a street intersection which has some form of traffic controls, there shall be no obstructions to traffic visibility within the clear sight triangle that is formed by the intersection of the centerline of two intersecting streets and a straight line joining the two centerlines at points 55 feet distant from the point of intersection.

2.   In all districts, on any corner lot at a street which does not have any form of traffic control, there shall be no obstructions to traffic visibility within the clear sight triangle that is formed by the intersection of the centerline of two intersecting streets and a straight line joining the two centerlines at points to a given number of feet distant from their point of intersection. The distances from this point of intersection are given on the following table for various speeds in miles per hour of enforced speed limits.