A navigation system comprises a navigation device (11) on a moving body and a data delivery server (41). The server has a means (52) for generating first guide map data including main points ahead of a branching point, direct branching roads between the branching point and main points, and simple congestion information; a means (53) for generating second guide map data including detailed congestion information, the branching point, the main points, points other than the main points, the direct branching roads, and a plurality of roads connecting the direct branching roads, main points, and points other than the main points; and a means (54) for delivering the first and second guide map data to the navigation device. The navigation device has a guide map display means (34) that displays a first guide map when a first guide point is reached and displays a second guide map when a second guide point is reached.


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    Title :

    Navigation system, navigation device, and data delivery server


    Contributors:

    Publication date :

    2015-11-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G09B Unterrichts- oder Vorführungsgeräte , EDUCATIONAL OR DEMONSTRATION APPLIANCES



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