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IMPAIRED OPERATION DETECTION METHOD

  • US 20110264325A1
  • Filed: 04/26/2010
  • Published: 10/27/2011
  • Est. Priority Date: 04/26/2010
  • Status: Active Grant
First Claim
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1. An impaired operation detection method comprising:

  • sensing a yaw rate of a vehicle over a time period;

    identifying time points of the time period in which the yaw rate changes direction;

    determining a linear rate of change in the yaw rate between two of the time points that are sequential in time;

    examining an actual rate of change in the yaw rate occurring between the two of the time points;

    determining a difference between the actual rate of change and the linear rate of change to obtain a difference value; and

    determining an operator'"'"'s impairment condition based on the difference value.

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