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Control server and control system for controlling traffic signals based on information from pressure sensors placed on a roadway

  • US 10,249,187 B2
  • Filed: 10/19/2017
  • Issued: 04/02/2019
  • Est. Priority Date: 10/27/2016
  • Status: Active Grant
First Claim
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1. A control server configured to control a plurality of traffic signals installed on a road, comprising:

  • a controller, wherein the controller functions as;

    a pressure information obtainer configured to obtain pressure information which is output from a pressure sensor installed at a stop position on the road corresponding to each of the plurality of traffic signals, and which includes a value representing pressure received from a vehicle running on the road, and configured to store the pressure information in a storage unit; and

    a braking information obtainer configured to, based on the pressure information stored in the storage unit, obtain braking information on a braking operation performed by the vehicle running on the road, and configured to store the braking information in the storage unit; and

    a traffic signal controller configured to, based on the braking information stored in the storage unit, generate a control signal for controlling the plurality of traffic signals; and

    an accident information storage unit configured to store the number of accidents which have occurred in the past in an area where any of the plurality of traffic signals are installed, and further configured to store the number of accidents and timing of occurrence of the accidents in association with each other;

    wherein the controller functions as the traffic signal controller to generate the control signal for controlling the plurality of traffic signals in a case where the number of accidents, stored in association with the timing corresponding to a range of dates and a period of time within the range of dates, is equal to or greater than a predetermined value.

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