隧道安全地点，以及员工可以安全地站立的高速线路。也是一个死胡同A single piece of track attached to a mainline or headshunt at one end only. The other end will usually be terminated with a buffer stop so as to ensure that trains do not run off the end.
" class="glossaryLink ">壁板允许火车分流在运行的线路上
