In daily life, there several types of accidents are occurring. Accidents may cause due to various reasons like brake failure, drunk, and drive, etc. Most of the accidents will occur due to over drunken drivers. In order to overcome this problem, this accident avoidance system project is implemented. This project uses an alcohol sensor which is used to sense the drunken person from 200ppm onwards. If the person is drunk, Firstly we check him whether he is dunked or not. Then, this module is placed in automobiles. If the driver is dunked then the sensor will detect the alcohol amount spent by the person and it will close by buzzing using a buzzer.