[[File:TrainCarts-Blocker-Ramped.gif|frame|right]] The blocker sign allows you to block trains coming from a certain direction. It is also used during path finding to block certain routes from being used. For example, if your trains are getting sent into the wrong direction, possibly colliding with other trains, you can use the blocker sign to prevent this.
blocker（阻挡器）控制牌（以下简称阻挡器）允许你阻挡来自某个方向的列车。在路径查找功能中也用于表示被禁用的路线。举个例子，如果列车被发往错误的方向，可能与其他列车相撞，你可以使用阻挡器防止此类事件的发生。
