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Energy Efficient Routing Using An Impedance Factor

  • US 20120271542A1
  • Filed: 04/25/2011
  • Published: 10/25/2012
  • Est. Priority Date: 04/25/2011
  • Status: Active Grant
First Claim
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1. A computer-implemented method for calculating road segment cost for energy efficient routing, comprising:

  • selecting a road segment with associated probe data;

    dividing the road segment into a plurality of sub-segments;

    calculating an average speed for each of the sub-segments using the probe data;

    calculating a speed slope for each sub-segment, wherein the speed slope equals the average speed of the sub-segment less the average speed of an adjacent sub-segment divided by the average speed of the sub-segment (speed slope=(avg. speed si

    avg. speed si+1)/avg. speed si);

    calculating a sum of speed slopes by adding the speed slope values for only those sub-segments having a negative value of speed slope; and

    classifying the road segment based on the sum of speed slopes.

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