How traffic lights work
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How traffic lights work
Traffic lights are equipped with induction control, and vehicle detectors are installed on the entrance of the intersection. The traffic signal timing scheme is calculated by a computer or an intelligent signal control computer, and can be changed at any time according to the traffic flow information detected by the detector. A control method.
The basic method of induction control is the induction control of a single intersection, which is referred to as single-point control induction control. Single-point induction control can be divided into half-induction control and full-induction control according to the different setting methods of the detector.
Taking the traffic system as an uncertain system, it can continuously measure its state, such as traffic flow, parking times, delay time, queue length, etc., gradually understand and master the object, and use the difference to change the adjustable parameters of the system or generate a control , a control method that can make the control effect achieve optimal or sub-optimal control.
