Most of the accidents occur because of alcoholic people and the failure of braking systems. So this paper describes a driver's alcohol detection system based on breath sample testing and automatic control of the braking system to avoid accidents. When driver starts the ignition system, the sensor measures the concentration of alcohol into its breath and switches off the ignition system. This system is also able to control the accidents that occur due to the unconsciousness of the driver, uncontrollable speed of the vehicle, and manual operation of the braking system by applying automatic breakthrough electronics devices to minimize the accident problems. When the vehicle gets closer to any object, automatically brakes will be applied. This system helps in achieving effective communication between transmitter and receiver modules using the CAN protocol. The protocol was developed aiming at automotive application switch sensors to monitor the parameters and visualize them to the vehicle driver through an LCD display. The human drivers check the parameters in the vehicle on the LCD screen at the same time of driving and control over the vehicle.