| 摘要 |
PROBLEM TO BE SOLVED: To provide a navigation system that can resume route guidance if the system precisely determines that a vehicle has not arrived at a destination after first route guidance.SOLUTION: The navigation system performs route guidance from a starting point to a destination for a vehicle 100. The system makes a judgement that the vehicle 100 gets lost if the vehicle 100 runs away from a destination and then back to near the destination after the vehicle 100 has seemed to reach the destination and route guidance has ended, and resumes route guidance.SELECTED DRAWING: Figure 1 |
