Vehicular traffic control at road crossings
has always been a matter of concern for administrations in many modern cities
around the world. Several attempts have been made to design efficient automated
systems to solve this problem. Most of the present day systems use
predetermined timing circuits to operate traffic signals, which are not very
efficient because they do not operate according to the current volume of
traffic at the crossing. It is often seen in today’s automated traffic control systems
that vehicles have to wait at a road crossing even though there is little or no
traffic in the other direction. There are other problems as well, such as
ambulances getting caught up by a red traffic signal and wasting valuable time.
Congestion is often translated into lost time, missed opportunities, lost
worker productivity, delivery delay, and a general increased cost.
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