Visibility at intersections is defined by a clear vision triangle that is formed by the intersection of two lines drawn along each property line away from where the streets come together at a stop sign or traffic signal - including where no traffic control exists. Clear Vision Illustrations
When the street doesn't have at least one stop sign or traffic signal, the clear vision triangle is formed by the intersection of two lines drawn 110 feet from the center of each street away from the intersection. Visibility at Intersections
Plants, shrubs, fences, or other structures may only be 30 inches in these clear vision areas. Signs and trees that are trimmed up at least eight feet can be in the clear vision areas as long as the tree or sign doesn't have a base wider than one foot.