This project is about making automobiles more intelligent and interactive which may notify or resist user under unacceptable conditions, they may provide critical information of real time situations to control the theft. Driver fatigue resulting from sleep deprivation or sleep disorders is an important factor in the increasing number of accidents on today's roads. In this project, we describe a real-time online safety prototype that controls the vehicle speed under driver fatigue. The purpose of such a model is to advance a system to detect fatigue symptoms in drivers and control the speed of vehicle to avoid accidents and also to prevent the theft. The main components of the system are microcontroller which is the heart of the system, sensors like smoke, eye blink, alcohol and GSM modem.