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How Red-Light Cameras Work

How Automated Red Light Cameras Work

  • The system activates when motion is detected just prior to the cross walk AFTER the traffic signal has turned red. The cameras capture two images of an alleged violation, taken from the rear of the vehicle.
  • The first image shows the vehicle at the white stop bar and the illuminated red light.
  • The second images show the violator in the middle of the intersection with the red light illuminated.
  • The license plate image is a close-up from one of the images captured.
  • Data, including the time, date and duration of the yellow and red lights, also is recorded

Labeled in Image Below

  1. Sensys Receiver
  2. Strobe
  3. Camera
  4. Controller
  5. Traffic Infraction Sensor/Detection Zone


Image #1: The 1st image records the vehicle behind the violation point while the light is red

Image #2: The 2nd image records the vehicle proceeding through the intersection while the light is red