ISO 11660的这一部分规定了与车辆的进入、防护和约束有关的特殊要求 ISO 4306-1中定义的桥式和龙门起重机，并给出了选择适当设备的标准 在起重机预期的各种使用条件下。

This part of ISO 11660 establishes the particular requirements relating to the access, guards and restraints for bridge and gantry cranes as defined in ISO 4306-1 and gives criteria for the selection of the appropriate equipment under the various conditions of use expected of the crane.