| 摘要 |
A navigation system comprising a position detector for locating a position of a vehicle in a route map, a map data storage for storing the route map with guidance setting for nodes in the route map, a route search function for searching and determining a proper route to a destination in the route map by using the guidance setting, a guidance providing function for providing route guidance based on the proper route determined by the route search function, and a guidance control function for controlling the guidance providing means according to the guidance setting. The guidance control function determines provision of an additional route guidance based on the guidance setting for a subject node in the proper route, and the guidance providing function provides the additional route guidance upon receiving instruction from the guidance control function.
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