This project is designed to send the information to the owner of the vehicle if driver get alcohol during the driving of vehicle. An alcohol sensor is included in the vehicle for sensing whether the driver has consumed alcohol. If consumed, then vehicle will be stopped automatically by controlling the motors and the SMS will send to the owner of the vehicle. To sending the message GSM module is used. The Microcontroller based system continuously watching the driver, if any mishap condition occur it will sense the alcohal and send a message to owners mobile. The main components of the toolkit include microcontroller, GSM modem. These components are integrated with the device board and thus incorporate the wireless features. The GSM modem send the SMS. The AT commands are serially transferred to the modem. In return the modem transmits the stored message through the wireless link. The microcontroller used in this case is ATMEL AT89S51 In this prototype model, LCD display is used for simulation purpose.