京——成线列车通过山洞多,白天点灭电灯都需要列车员操作。为了减轻列车员的负担,更好地为旅客服务,我们学习了成都局贵阳车辆段的经验以后,试制了电灯自动开关控制器,使列车进入山洞以后,自动开灯,出山洞后自动灭灯。经过试运,效果良好,现已投入小批生产。 Beijing - into line train through the cave and more, during the day to turn off lights require the conductor operation. In order to reduce the burden on the conductor and to serve the passengers better, after studying the experience of Guiyang depot of Chengdu Bureau, we tried out a pilot lamp automatic switch controller to automatically turn on the lights after the train entered the cave. After the trial run, the effect is good, is now put into small batch production.