1. The past traffic lights are the manual control switch to control the policeman on duty.

   The traffic light is a computer program control, now is artificially according to road traffic making the direction of light color by opening and closing schedule, input to the control computer, the computer to control the light again. SCATS (adaptive control system) control, SCATS system is a kind of regional control system, an area the intersections are laid underground line, used to collect traffic data. Intersection signal detector and the collected data and center control room computer networking, thus carries on the coordinated control of traffic in the area of. It can keep the same road continuous intersection of each light uniform time cycle, can also according to the change of different road traffic, automatically adjust the change of the intersection signal cycle. Is controlled by the computer automatically, open and shut case according to the direction of each intersection and Settings, respectively.

    
    

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