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Control system for vehicle

  • US 10,046,763 B2
  • Filed: 05/19/2016
  • Issued: 08/14/2018
  • Est. Priority Date: 05/26/2015
  • Status: Active Grant
First Claim
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1. A control system for a vehicle, the control system comprising:

  • an imaging device configured to capture an image including a sign that represents a speed limit value on a road on which the vehicle is traveling; and

    an electronic control unit (ECU) configured to;

    recognize a recognition speed limit value based on the image captured by the imaging device;

    set a vehicle speed limit value based on the recognition speed limit value;

    limit a vehicle speed of the vehicle based on the set vehicle speed limit value;

    measure at least one of an elapsed time and a travel distance, since the set vehicle speed limit value has been set;

    estimate an estimation speed limit value on the road on which the vehicle is traveling upon at least one of;

    (i) the measured elapsed time reaching a predetermined time, and (ii) the measured travel distance reaching a predetermined distance;

    control a display device to display the estimation speed limit value;

    determine a reliability of the estimation speed limit value;

    determine whether the reliability of the estimation speed limit value is a predetermined reliability in response to a predetermined time passing since the estimation speed limit value has been displayed on the display device; and

    upon the estimation speed limit value being displayed on the display device, determine, based on the reliability of the estimation speed limit value, whether a switching command to switch the set vehicle speed value to the estimation speed limit value has been input;

    upon determining that the, reliability of the estimation speed limit value is the predetermined reliability, switch the set vehicle speed limit value to the estimation speed limit value.

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