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Navigation system and on-board unit

  • US 10,311,729 B2
  • Filed: 01/16/2015
  • Issued: 06/04/2019
  • Est. Priority Date: 01/16/2015
  • Status: Active Grant
First Claim
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1. A navigation system comprising:

  • a traffic condition calculation unit that calculates a traffic condition evaluation value indicating a traffic condition of each road segment included in a target area;

    a guidance route determination unit that prepares a plurality of routes to a same destination for each vehicle in the target area, calculates an area traffic condition index value indicating a traffic condition of a group of vehicles in the target area and obtained by integrating index values indicating the traffic condition of the plurality of routes prepared for each vehicle for all vehicles in the target area on a basis of the traffic condition evaluation value calculated by the traffic condition calculation unit according to the plurality of routes to the same destination of each vehicle, and determines a route in which a degree of non-congestion based on the area traffic condition index value is highest among the plurality of routes to the same destination for one vehicle as a guidance route; and

    a guidance route providing unit that provides the guidance route determined by the guidance route determination unit to a driver of a corresponding vehicle.

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