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Navigation device, navigation method, and program

  • US 9,228,845 B2
  • Filed: 12/05/2011
  • Issued: 01/05/2016
  • Est. Priority Date: 12/21/2010
  • Status: Expired due to Fees
First Claim
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1. A navigation device, comprising:

  • a memory storing a guidance program; and

    a processor that, when executing the stored program;

    acquires deviated point information regarding a deviated point where a vehicle traveling a set route has deviated the set route;

    acquires post-deviation travel history information regarding a travel history, the travel history indicating routes that past deviated vehicles have traveled in the past after having deviated the set route at the deviated point;

    determines based on the post-deviation travel history information whether each past deviated vehicle had traveled along a reroute set after deviating the route at the deviated point;

    determines whether a percentage of the past deviated vehicles that were determined as having traveled along the reroute is a first predetermined value or more;

    when it is determined that the percentage of the past deviated vehicles that were determined as having traveled along the reroute is the first predetermined value or more, determines that guidance of the set route is not appropriate; and

    when it is determined that the guidance of the route is not appropriate, changes the guidance of the route.

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