本SAE推荐规程适用于乘用车和轻型卡车应用中使用的分动箱。分动箱为链条式、齿轮式、手动和电子换档类型，但也可以采用其他配置。选择的操作点（速度、温度等）反映了美国环境保护局车辆底盘测功机行驶时间表（DDS）的操作点。

This SAE Recommended Practice covers transfer cases used in passenger car and light truck applications. Transfer cases are of the chain, geared, manually and electronically shifted types although other configurations are possible. The operating points (speeds, temperatures, etc.) were chosen to mirror those of the United States Environmental Protection Agency Vehicle Chassis Dynamometer Driving Schedules (DDS).