Route guidance system and method

Abstract

A route guidance system has a current-location detecting unit, a route-searching processing unit for searching a searched route, a guidance-intersection setting processing unit for setting a guidance intersection, an assistant guidance intersection determining processing unit for determining whether or not an assistant guidance intersection having a parallel road which extends in the same direction as a departing road from the guidance intersection on the searched route of the intersections between the current location on the searched route and the guidance intersection, and a leading guidance processing unit for, in the event that there is an assistant guidance intersection, performing leading guidance for leading a self-vehicle to the departing road when the self-vehicle approaches the guidance intersection after having passed the assistant guidance intersection, and not leading the self-vehicle to the parallel road when the self-vehicle approaches the assistance guidance intersection. Thus, a self-vehicle can be driven along a searched route.

Description

technical field [0001] The invention relates to a path guidance system and a path guidance method. Background technique [0002] In the past, in a navigation device, for example, the current position of the own vehicle is detected by GPS (Global Positioning System: Global Positioning System), that is, the current position of the own vehicle is detected, and then the map data is read from the data storage unit, and displayed on the display unit. A map screen is formed, and the own vehicle position showing the current position, a map around the own vehicle position, and the like are displayed on the map screen. Therefore, the driver can drive the vehicle based on the position of the own vehicle displayed on the map screen and the like. [0003] Also, when the driver inputs a destination and sets search conditions, route search processing is performed based on the search conditions, and a route from the departure point indicated as the current position to the destination is se...

AI Technical Summary

Problems solved by technology

[0006] However, in the above-mentioned conventional navigation device, when there is a road extending in the same direction as the road exiting from the guidance intersection, that is, the exit road, at an intersection before the guidance intersection on the search route, the driver sometimes uses the Make a left or right turn of the vehicle at the above intersection by mistaking it as a guidance intersection

Therefore, it is impossible to make the vehicle travel along the search path reliably

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