| 摘要 |
A method and system for transmitting a warning message to a driver of a vehicle is provided. Authorization for uploading message data is provided followed by the provision of message data indicative of a plurality of pre-recorded warning messages. The message data are then stored in memory of the transmitter. A responder of the emergency vehicle selects one of the plurality of pre-recorded warning messages. The message data associated with the selected warning message are then encoded and encrypted. The encrypted message data are then processed to generate a RF signal in dependence thereupon which is then transmitted to the vehicle. Upon receipt of the RF signal at the vehicle message data are generated in dependence thereupon which are then decrypted and decoded. The decoded message data are then provided to the entertainment system of the vehicle and the operation of the entertainment system is controlled such that the warning message is broadcast when the entertainment system is turned off and such that provision of other audio signals is interrupted for broadcasting the warning message when the entertainment system is turned on.
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