| 摘要 |
Frequent execution of auto-rerouting in the vicinity of a junction where a current-position skipping of a vehicle due to map-matching is likely to occur is prevented.When the current position of the vehicle calculated by a current position calculating unit 11 is in the vicinity of a junction on a recommended route set by the route searching unit 13 and even if the current position of the vehicle is off the recommended route as a result of correction by a map matching unit 12, a route guidance unit 132 does not request a route searching unit 131 to search a newly recommended route extending from the corrected current position of the vehicle to a destination.
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