本SAE推荐实施规程为新卡车、公共汽车和车辆的制动系统的水平道路试验建立了统一的程序，以及设计用于道路使用且属于以下类别的车辆组合:轻型卡车和公共汽车:6001–10000 lb（2700–4500 kg）gvw卡车和公共汽车:超过10000 lb（4500 kg）gvw车辆组合（牵引车超过10000 lb（4500 kg）gvw）

This SAE Recommended Practice establishes a uniform procedure for the level road test of the brake systems of new trucks, buses, and combination of vehicles designed for roadway use and falling in the following classifications: Light trucks and buses: 6001–10,000 lb (2700–4500 kg) gvw Truck and bus: Over 10,000 lb (4500 kg) gvw Combination of vehicles (towing vehicle over 10,000 lb (4500 kg) gvw)