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Apparatus and method for controlling traffic signals

  • US 9,412,272 B2
  • Filed: 06/21/2012
  • Issued: 08/09/2016
  • Est. Priority Date: 07/18/2011
  • Status: Expired due to Fees
First Claim
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1. A traffic light control device that controls signal light change of a traffic light, comprising:

  • a broadcast signal receiving unit that receives a broadcast signal emitted from a traffic control center via a broadcast network; and

    a traffic light control unit that determines an offset time from a reference traffic light on the basis of offset parameter of the broadcast signal when the traffic light is a control target traffic light belonging to a reference traffic light sharing group indicated by the broadcast signal and that outputs a control signal for controlling the light change of the control target traffic light so that a time point which is adjusted by the determined offset time from a signal light display start time point of the reference traffic light is matched with a signal light display start time point of the control target traffic light.

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