| 摘要 |
A vehicle navigation system is configured to connect a communication line from a wireless communication unit to a service center when a vehicle is traveling at a speed slower than a predetermined value and the communication line to the service center is not connected. By setting the predetermined value of the speed to a certain range in which the vehicle is highly probable to stop (e.g., a speed of a few kilometers per hour), the communication unit of the vehicle navigation system starts a connection operation of the communication line to the service center before the vehicle comes to a full stop, thereby enabling an establishment of connection of the communication line between the communication unit and the service center prior to the full stop of the vehicle.
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