Navigation system and on-board unit
First Claim
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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Accused Products
Abstract
A navigation system includes: a traffic condition calculation unit (222) that calculates an evaluation value indicating a traffic condition of each road segment included in a target area; a guidance route determination unit (223) that determines a route in which a degree of non-congestion based on the traffic condition evaluation value of a road segment included in a route to a destination of each vehicle is the highest as a guidance route on the basis of the traffic condition evaluation value calculated by the traffic condition calculation unit and the destination of each vehicle; and a guidance route providing unit (224) that provides the guidance routes determined by the guidance route determination unit to a driver of the corresponding vehicle.
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Citations
9 Claims
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1. A navigation system comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An on-board unit comprising:
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a positional information generation unit that acquires vehicle positional information indicating a position of a vehicle; a communication unit that transmits the vehicle positional information acquired by the positional information generation unit and route information indicating a setting route to a destination set for the vehicle to a navigation server; and a navigation control unit that receives at least one candidate route of which the destination is the same as the setting route and in which the route to the destination is different from the setting route, from the navigation server via the communication unit and outputs information for navigating the vehicle according to the candidate route from an output unit, the candidate route being a route in which a degree of non-congestion based on an area traffic condition index value is higher than a degree of non-congestion based on the area traffic condition index value of the setting route, the area traffic condition index value being obtained by integrating index values indicating a traffic condition of the setting route or the candidate route for each vehicle for all vehicles in a target area on a basis of an evaluation value indicating the traffic condition of each road segment included in the target area.
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Specification