There is a high incidence of crashes at intersections, which represent areas where two or more roads intersect with one another. Cars must do things like cross over the intersection, make left turns and make right turns. Any one of these activities can mix with another vehicle or vehicles at the intersection, resulting in an accident.
Many accidents are the result of an illegal turn at an intersection. This is true of intersections controlled by stop lights and intersections minimally controlled. One study looked at the characteristics of traffic accidents at intersections, looking at different factors such as driver’s age, gender, weather conditions, traffic control devices and critical pre-crash events.