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On-board traffic density estimator

  • US 9,117,098 B2
  • Filed: 06/03/2013
  • Issued: 08/25/2015
  • Est. Priority Date: 06/03/2013
  • Status: Active Grant
First Claim
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1. A method for an electronic controller in a host vehicle to determine a traffic density, comprising the steps of:

  • a sensor remotely sensing objects within a field of view around the host vehicle;

    identifying positions of nearby vehicles from among the sensed objects;

    predicting a path of a host lane being driven by the host vehicle;

    the electronic controller binning the nearby vehicles into a plurality of lanes including the host lane and at least one adjacent lane flanking the predicted path;

    the electronic controller determining a host lane distance in response to a position of a farthest vehicle relative to the host vehicle that is binned to the host lane;

    the electronic controller determining an adjacent lane distance in response to a difference between a closest position in an adjacent lane that is within the field of view and a position of a farthest vehicle binned to the adjacent lane;

    the electronic controller indicating a traffic density in response to a ratio between a count of the binned vehicles and a sum of the distances.

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