Abstract: In order to efficiently monitor drunk driving, a monitoring system based on RFID and GPRS is put forward. The system uses the alcohol detection module to test alcohol concentration of the drivers. The active RFID tags can be waked from the power down mode to communicate with the RFID readers that can be deployed fixed in somewhere or in the hands of the traffic police on the duty in order to realize the intelligent identification of the drunk driving vehicles as well as the intercept and trace of the drunk driving vehicles within the scope of the polices inspection. Because of the finite life of the active RFID tags, the system only wakes the tags up when the alcohol detection module detects that the alcohol concentration is out of limits which can reduce the tags power consumption efficiently and prolong the tags service life.

Key words: vehiclemounted terminal of drunk driving, RFID readers, active RFID tags, tags power consumption