A car navigation system changes from a normal guidance mode to a simplifying guidance mode when determining that part or all of sections in a guidance route is familiar or specific to an occupant. The simplifying guidance mode provides no audio guidance or simplified audio guidance with respect to route-related information compared to the normal guidance mode, while traffic-related information is provided using the same audio guidance as in the normal guidance mode.

 
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< Navigational aid for diver

> Single or multiple route map matching apparatus for navigation service and method thereof

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