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Method and device for providing traffic information

  • US 6,240,364 B1
  • Filed: 02/07/2000
  • Issued: 05/29/2001
  • Est. Priority Date: 02/06/1999
  • Status: Expired due to Term
First Claim
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1. A method for providing, to a vehicle, current and forecast traffic data for a given starting location on a road network at a given starting time, said method comprising the steps of:

  • determining a plurality of individual paths in the road network;

    providing, at a traffic center, preliminary traffic data including at least current and forecast functional values of a specified traffic-dependent cost function for each of said individual paths, independent of said starting location and said starting time;

    performing a traffic-dependent route search to determine a route which optimizes the cost function from the starting location to each respective one of said plurality of paths and determining a corresponding path arrival time;

    choosing, for each respective route, one of said current and forecast cost function values which belongs to an associated determined arrival time;

    providing at least said chosen cost function values as processed traffic data for the route paths of the network and transmitting said traffic data to said vehicle.

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