本文件适用于ISO 5053-1:2020，3.22中定义的回转崎岖地形可变范围卡车（以下简称卡车），其在动臂左侧或中心位置（不包括动臂右侧的操作员位置）有特定的操作员坐姿。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document applies to slewing rough-terrain variable-reach trucks (hereinafter referred to as trucks) as defined in ISO 5053-1:2020, 3.22, that have a specific seated operator's position, on the left-hand side of the boom, or centre position (excluding operator position on the right side of the boom).All current amendments available at time of purchase are included with the purchase of this document.