SSMs are deterrents; they are additional treatments that can be applied to grade crossings that will reduce the number of grade crossing violations.

附加安全措施是必要的关卡；附加安全措施是应用于平交道口的额外处理，以减少平交道口的违章事故数量。

At present railway conditions, in order to reduce the accidents that occurred at the grade crossing, this paper put forward the scheme of design and setting of the locomotive auto-whistle device.

针对目前铁路的线路状况，为有效防止和减少道口事故的发生，提出了机车自动鸣笛装置的设计安装方案。

Ahead of us there is a railroad crossing a highway at grade.

前面有一条铁路与公路平面交叉。

In this paper, a cellular automaton model is proposed to describe the traffic flow at the grade roundabout crossing with the inner roundabout lane and the outer roundabout lane.

从道路结构出发，对具有内、外环道的平面环形交叉路口建立了具有多个道路瓶颈的元胞自动机模型，对平面环行交叉路口的交通流进行研究。