Heavy vehicle and coaches are the most used means of transport in the modern transport of people and loads around the world. Heavy vehicles are not comparable with its mass by car and is therefore developed a special braking system designed for heavy vehicle, and is based on the brakes for rail vehicles. Over time, the ordinary mechanical assembly which is braked heavy vehicle were added to the various systems, some are download from passenger cars such as the anti-lock braking system and traction control system, and in recent time there are system specially developed for heavy vehicles such as stretch brake and active braking force control.