本SAE标准适用于安装在符合SAE J2194或SAE J1194的保护框架或外壳上的顶罩，以及以下坠落试验的附加要求，以验证顶罩在保护操作员免受坠落物体伤害方面的有效性。本文件中概述的测试程序和性能要求基于当前可用的工程数据。

This SAE Standard applies to an overhead cover installed on a protective frame or enclosure conforming to SAE J2194 or alternately SAE J1194 and the following additional requirement of a drop test to verify the effectiveness of the overhead cover in protecting the operator from falling objects.The test procedures and performance requirements outlined in this document are based on currently available engineering data.