PROBLEM TO BE SOLVED: To provide a navigation system capable of assisting users to pass through an interchange and a junction having a complicated structure having a large number of fork roads without being lost.;SOLUTION: When a vehicle approaches a location at a distance of 300 m from gates of an interchange or a junction, gates of a tollgate 23 displayed on a display monitor 16 are classified by color similarly to actual gates. Roads 23a-23c to be traveled after the passage through the gates are also classified by color according to the display colors of the gates 23a-23c.;COPYRIGHT: (C)2010,JPO&INPIT
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