This Alcohol Detector Provides A Unique Method To Drowsy People. This Project Has An Eye Blinking Sensor Embedded In The Vehicles. Buzzer, GSM, LCD Receives The Signal That Sensor Senses The Eye Blink. In This System The Outputs Of Sensors Are Given To The Microcontroller For Comparison. If The Value Reaches To Fixed Limit Then Automatically GSM Will Send The SMS, Buzzer Will Produces Sound And LCD Will Display The Message.