2006年1月4日夜,信号工区接到二道河车站道口通知“X进站信号机红灯和绿灯同时点亮,但绿灯灯光比红灯灯光要暗”。查看当时控制台,站场只有Ss至SL排列了一条显示双黄的接车进路,如图1黑实线所示,并且控制台显示全部正常。图1简易站场平面布置图故障查找:模拟当日情况,排列Ss至S On the night of January 4, 2006, the signal work area received a notice at the crossing of Erdaowu Station that “the X stop signaling light is on and the green light is on at the same time, but the green light is darker than the red light.” View the console at the time, the station only Ss to SL arranged a double yellow pick up the way, as shown in Figure 1, the black solid line, and the console shows all normal. Figure 1 simple station floor plan troubleshooting: to simulate the situation of the day, arranged Ss to S.