path guidance device

Abstract

A route guiding device comprises a position information acquiring unit (20) used for acquiring position information of a vehicle, a map information acquiring unit (10) used for acquiring map information including intersection information and road information, a route setting unit (10) used for setting a guide route from a starting place to a destination, a route guiding unit (10) for road guiding, a departure detection unit (10) used for detecting a condition that the vehicle has departed from the guiding route; and a road departure information storage unit (60) used for storing road departure information associated with the intersection information related to an intersection from where the vehicle departs from the guiding route. The road departure information consists of entered road information and departed road information. With regard to a departed road indicated by the road departure information or departed roads related to intersections or roads similar to the intersection or the road indicated by the road departure information, the route setting unit sets the guiding route based more on a priority detected before departure by the departure detection unit than on a priority acquired during adoption as the guiding route.

Description

technical field [0001] The present invention relates to a route guidance device for conducting route guidance from a starting point to a destination. Background technique [0002] Conventionally, as an example of a route guidance device, there is a navigation device disclosed in JP-A-11-316128. [0003] This navigation device compares the degree of traffic in the direction of the guided route with the degree of traffic in the direction in which the vehicle actually travels when the vehicle departs from the guided route. Then, based on the comparison result, when the traffic in the direction in which the vehicle actually travels is smaller than that in the direction of the guide route, the traffic avoidance index indicating the tendency to avoid the traffic is updated. On the other hand, when both are equal, or when the degree of traffic in the direction in which the vehicle actually travels is greater than the degree of traffic in the direction of the guidance route, the av...

AI Technical Summary

Problems solved by technology

[0006] However, at intersections, there are places where it is difficult to identify the road corresponding to the guidance route due to the difference in road form such as the connection state of the road to the intersection and the shape of the road connected to the intersection.

In such an intersection, it may happen that the vehicle deviates from the guidance route regardless of the degree of congestion of the road connected to the intersection and the driver's tendency to choose a route.

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