Patent ID: 6415225
Filing Date: 2002-07-02
Classification: G01C,G08G

Abstract:
A navigation system, comprising:a present position detecting means for detecting a vehicle's present position; an input means for inputting information necessary for searching a destination or a route; an output means for outputting route guidance information, wherein the vehicle's present position is traced as route guidance is executed; an information memory means for storing data on guidance target roads and non-guidance target roads as necessary for a route search; a route searching means for searching a route to a destination on the basis of information input by said input means and data stored in said information memory means; a judgment means for determining whether non-guidance target roads are included in the searched route; and a control means for executing route guidance as the present position of the vehicle is traced and detected by the present position detecting means and for setting a guidance terminating point, wherein route guidance is not executed beyond the guidance terminating point when non-guidance target roads are determined to exist on the searched route by the judgment means.