n the heavy truck Steyr truck on the bridge before the essful "grafting" to solve the problems so that OEMs and users of long-standing tradition of drum brake whistle, frequent brake brake shoe wear , rain brake performance degradation and other issues. Steyr air disc brakes for the first time in the application of the truck before the bridge, but also for the future development of high-speed trucks, heavy truck experience and technology to provide a reserve. At the same time, Shaanxi Heavy Duty Truck, Foton, FAW, Dongfeng, JAC and other major domestic auto plants pleted disc brake in the early stage of heavy-duty automotive-type Рreserve pilot test and technical work in a disc brake These aspects can be said that the future development of heavy truck braking system to match the new trend.