This system provides a unique method to curb drunken and drowsy people. This system has an alcohol sensor and eye blinking sensor embedded in the vehicles. Whenever the driver starts the vehicle, the sensors sense the eye blink and measures the content of alcohol in his breath and automatically sends the signal to the buzzer, gsm and LCD. In this system, the outputs of sensors are given to the microcontroller for comparison. If the value reaches the fixed limit then automatically gsm will send the SMS, the buzzer will produce sound and LCD will display the message.