Project Description: In our day to day life we life we are see so many accidents . we are follow the traffic rules can avoid the accidents but opponent car come high speed so we can't avoid the accident .We can control the opponent car, it may reduce the accident percentage so we invented our communicating car to send and receive message is from near by and opponent car. To measure the distance of the opponent car , if the car come two close to our car , its send the signal's, if they are continue to come near car it will send the control signal to the opponent car and its stop the car.