| 摘要 |
A tracking system includes a vehicle tracking unit and a monitoring station communicating therewith. The vehicle tracking unit preferably includes a vehicle position determining device, a wireless communications device, and a controller connected to the wireless communications device and the vehicle position determining device. The controller preferably cooperates with the wireless communications device to send an alert message. The monitoring station may include a user interface for generating a sequence of alert message notifications based upon receiving the alert message sent from the vehicle tracking unit, and for canceling any remaining alert message notification of the sequence based upon a cancellation command response from a user having already received the alert message notification. |
