| 摘要 |
A vehicle tracker may include a cellular transceiver at a vehicle for receiving an activation message from a cellular communications network. The activation message may include a common telephone number for a plurality of vehicle trackers and a unique identification number for the vehicle tracker. A vehicle position-determining device may be at the vehicle. A controller at the vehicle may cooperate with the cellular transceiver and the vehicle position-determining device to transmit vehicle location data if the unique identification number in the received activation message matches the unique identification number for the vehicle tracker. The vehicle tracker may be part of a vehicle tracking system in which a plurality of vehicles may each have a respective vehicle tracker. The vehicle tracking system may include a user operable device to generate the activation message.
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