How traffic signal lights work

• 1. Traffic signal lights need to be wired to the traffic signal control machine, and the traffic signal controller sends a signal command to control the different colors of the signal to switch.
  2. The normal way of working is:
  A. The red light signal is on and the red signal time can be program.
   
  B. When the red signal light ends, the signal will switch to the green signal light according to the command of the Traffic signal control machine. At this time, the car can pass, the green signal light time can be program, the green signal time can be changed via actuated vehicle detection machine, Also we can set whether the green light is flashing or not flashing. See the below picture:
   
  C. When the green light signal ends, it will switch to the yellow light warning signal, indicating that the current lane vehicle will turn red light signal. See the below picture:
   
  D. After the yellow light signal is over, it switches to the red light signal, and the traffic signal lights works like this. Please see the following video:
  https://www.youtube.com/watch?v=s7KxWnWFBsc

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