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VEHICLE NAVIGATION SYSTEM

  • US 20120066232A1
  • Filed: 09/08/2011
  • Published: 03/15/2012
  • Est. Priority Date: 09/08/2010
  • Status: Active Grant
First Claim
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1. A vehicle navigation system, comprising:

  • a database configured to store map data having links corresponding to road segments and attributes associated with the links, the map data having at least some links associated with a curvature attribute and a mean absolute curvature (custom-character) stored for the curvature attribute for corresponding links, the mean absolute curvature (custom-character) being determined from a normalized sum or integral of absolute curvature values along the road segment corresponding to the link;

    a processing unit configured to estimate an energy consumption of the vehicle for a link using the curvature attribute retrieved from the database for the link.

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