DSD.

驾驶员的安全装置：牵引装置Anything with wheels on it which can run on the track including locomotives, carriages, goods wagons, and maintenance vehicles.

" class="glossaryLink ">滚动股票

如果驾驶员无法承受，这将停止火车。普遍知道是“死人的踏板”或“死人的手柄”