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Intersection is an area shared by two or more roads.
This area is designated for the vehicles to turn to different directions to
reach their desired destinations.
Its main function is to guide vehicles to their respective directions.
Traffic intersections are complex locations on any highway.
This is because vehicles moving in different direction wan to occupy same space
at the same time.
In addition, the pedestrians also seek same space for crossing.
Drivers have to make split second decision at an intersection by considering
his route, intersection geometry, speed and direction of other vehicles etc.
A small error in judgment can cause severe accidents.
It also causes delay and it depends on type, geometry, and type of control.
Overall traffic flow depends on the performance of the intersections.
It also affects the capacity of the road.
Therefore, both from the accident perspective and the capacity perspective, the
study of intersections very important for the traffic engineers especially in
the case of urban scenario.
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