本SAE推荐规程为空气制动单单元卡车、客车和组合车辆提供了现场测试程序和说明。制动力分配现场测试（使用减少停车距离后的系统进行）仍然适用，但是，本文件中未涉及带有电子控制制动系统的车辆，可能需要在未来进行处理。它还为以下方面提供了建议: a仪器和设备。b车辆准备。c空气制动单车和组合车的试验。d制动力分布的计算。e本试验程序拟用作现场程序。如果需要使用实验室设备的更精细的方法，请参考SAE J1505。

This SAE Recommended Practice provides a field test procedure and instructions for air braked single unit trucks, buses, and combination vehicles. Brake force distribution field testing with systems post-reduce stopping distance changes is still appropriate, however, vehicles with electronically controlled braking systems are not covered in this document and may need to be addressed in the future. It also provides recommendations for: a Instrumentation and equipment.b Vehicle preparation.c Test of air-braked single and combination vehicles.d Calculation of brake force distribution.e This test procedure is intended to be used as a field procedure. If a more refined method, utilizing laboratory equipment, is required, refer to SAE J1505.