为了确定是否需要行人或骑乘者设备，需要确定典型工作周期中涵盖的平均距离和最大距离。有时，牵引车/拖车系统可能是更可取的方法。
To determine whether pedestrian or rider equipment is required, the average and maximum distances covered in a typical work cycle need to be established. Sometimes a tractor/trailer system may be the preferable method.
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