Essay On Traffic Light Control

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II. TECHNICAL BACKGROUND The existing systems focuses on the problem of adaptive traffic light control uses real-time traffic information collected by a wireless sensor network (WSN) sequence and length of traffic lights and then accordingly the traffic will be detected. This algorithm considers a number of factors such as traffic volume, waiting time, vehicle density, etc., after which green light sequence will be determined. Intelligent transportation systems (ITSs) are automatic road traffic management systems that manage road traffic with the intention of improving traffic safety and minimizing the energy consumption of vehicles running on the roads. An ITS consists of four subsystems (i) a surveillance system (ii) a communication system (iii) an energy efficiency system and (iv) a traffic light control system. Most probably the current traffic light control systems use any one of three control approaches: fixed-time, actuated, or adaptive. All these cases have the same goal, to maximize safety, speed, and energy efficiency or minimize waiting time, number of vehicle stops. So far as we know, most existing work use a fixed sequence for traffic lights control, that takes an average…show more content…
This is recognized from 500m distance from the signal. When it is green signaled for the emergency vehicle’s path the other three sides of the traffic is halted. The mechanism that can be used in the sound sensors is that in which the siren sound of the emergency vehicles reaches the maximum level when it is near the signal and then decreases after crossing the signal. When the sensor recognizes the decrease of the siren sound, the normal operation of the traffic light

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