At least, through before after giving one passing target area, through, before said at least one passing target area, with the standard which is decided through before around being decided, through one which to area exists passing target point at least it features that the route is calculated, route calculation method to target area is proposed from start area. Until recently, unlike known route calculation method from technology, through before the passing goal which is given is not the constitution part of the travelling route, through before around being decided, through to area before un sharply it is decided, it is used as the datum point in order to exert influence on route calculation.
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