Unit Swap (换车执行)

The train booked to work a stopping service from Crewe to Manchester has failed. As a result, you'll be running a new service from Alderley Edge. But first, you must setup your train at Stockport Carriage Sidings.（原定执行克鲁至曼彻斯特站站停任务的列车发生故障。因此，你需要执行一趟从奥尔德利埃奇始发的临时任务。执行任务前，你需先在斯托克波特车辆段完成列车整备。）