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Navigation systems, methods, and programs

  • US 20070050133A1
  • Filed: 07/10/2006
  • Published: 03/01/2007
  • Est. Priority Date: 07/11/2005
  • Status: Active Grant
First Claim
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1. A navigation system for a vehicle, comprising:

  • a controller that;

    detects a number of travel lanes available for traveling in a direction that the vehicle is traveling;

    detects a lane in which the vehicle is currently located;

    determines a congestion degree for each of the available travel lanes;

    determines a degree of difficulty of turning right or left at a next intersection that the vehicle is approaching, based on the detected number of available travel lanes, the detected lane in which the vehicle is currently located, and the detected congestion degree;

    selects a travel route in accordance with the determined degree of difficulty; and

    provides guidance information on the selected travel route.

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