How to display 3D maps for navigation devices and navigation devices

摘要

PURPOSE: A navigation device and a 3D map display method of the navigation device are intended to supply a route to a user more clearly by more detailed display on a specific layer. CONSTITUTION: A 3D map display method of a navigation device is as follows. Information on at least one of a search route and a prediction route is obtained. According to the obtained information, a multi-layer road, which comprises at least two layers, is displayed on a 3D map(S130). If the obtained information is related to the search route, the identifying information of a road, which is contained in the searched route is obtained. It is determined using the identifying information which road the searched route of the multi-layer road contains.