Metro safety line is very important to the daily operation. 地铁安全线(SL)在日常运营中对保障运营安全有着重要意义。
The causes to troubles in safety line of door system for vehicle compartments are analyzed, and measures for solution are put forward. 分析了车辆客室门系统安全线(SL)故障的原因,并提出了解决措施。
The train is drawing into the station, please step back behind the safety line. 列车马上就要进站了,请乘客退后到安全线(SL)以外。
Analysis of Troubles in Safety Line(SL) of Door System for Guangzhou Metro No.4 Line 广州地铁4号线门系统安全线(SL)故障分析
Please stand behind the yellow safety line while waiting for the train. 请您站在黄色安全线(SL)以内排队候车。