Navigation apparatus and navigation program

Abstract

The invention provides a navigation apparatus and navigation program which guide when a lane is added to correspond to a road on which a vehicle is traveling. If determination that a course change at a branch point is necessary and a vehicle is traveling on a road in which a lane is added to correspond to a road which is taken after the course change (road before the branch point), 'direction guidance' is provided before a road section in which the lane is added (added lane section) and 'lane guidance' is provided in the added lane section. As above, by switching the 'direction guidance' and the 'lane guidance' depending on whether the vehicle has reached the added lane section or not, and by providing either one of the guidances, a driver can recognize the guidance without confusion. Particularly, when the branch point is branched off at a narrow angle and when the added lane is a lane dedicated to the road which is taken after the course change, by providing the lane guidance, instead of the direction guidance indicating left or right, the guidance becomes easier to understand.

Description

technical field [0001] The present invention relates to a navigation device and a navigation program for guiding a driving route of a vehicle. Background technique [0002] In recent years, guidance of a vehicle by a navigation device has become popular. [0003] The navigation device has the function of searching for a route from the departure point to the destination, the function of detecting the position of the vehicle using sensors such as GPS (Global Positioning System) satellites or gyroscopes, and the route to the destination and the function of the vehicle. A function that displays the current position of the vehicle on a map, a guidance function that guides the direction to change the route at branch intersections based on the searched route to the destination, etc. [0004] In addition, the navigation device proposed in Patent Document 1 is equipped with a lane guidance function in addition to guidance in changing directions of the course (junction point guidance...

AI Technical Summary

Problems solved by technology

[0007] In the guidance provided by the navigation device described in Patent Document 1, even if a lane is added corresponding to the road after the course change, both the guidance in the direction of the course change (branch guidance) and the lane guidance are always provided. , so there is a situation where the guidance is repeated, but it is difficult to understand

[0008] In particular, when the road after changing the course is compared with the road currently traveling (or the road when going straight without changing the course), when branching at a small angle, the steering wheel operation amount is also small, so if the direction guidance for turning left and right is presented (Ahead...meters to the left / right), sometimes there is a sense of incongruity

[0009] In addition, it is also inappropriate to drive in a lane such as a branch of an expressway, a road dedicated to an exit, or a connecting road in an interchange.

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