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Route calculation around traffic obstacles using marked diversions

  • US 7,526,377 B2
  • Filed: 07/17/2003
  • Issued: 04/28/2009
  • Est. Priority Date: 07/17/2003
  • Status: Active Grant
First Claim
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1. A navigation system for a vehicle comprising:

  • a digital map database containing a road network map that is divided into a plurality of road segments;

    a route planning module to calculate a route to a trip destination using the road network map;

    a traffic event simulation module to simulate at least one traffic event in at least one road segment;

    a traffic event notification device operable to receive a traffic event notification message indicating a traffic event has occurred along a respective road segment of the route; and

    a diversion module to retrieve an alternative route that avoids the traffic event by locating at least one marked diversion contained in the digital map database that is associated with the respective road segment where the traffic event has occurred.

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