Time :12-11-23 gas alarm manufacturers technical department, the travel process, suffered the Beijing Metro Line 4 failure, the scene of a large number of passengers stranded, the microblogging Watch Beijing subway system, signal failure, the relevant units to be careful to check regularly to maintain protect passengers on from work smoothly. Nov. 23, 7 pm, Zhongguancun Station to Yuanmingyuan Beijing Metro Line 4 station interval signal system failure, leading to clear off of the train station in the People's University Station and Xinjiekou exhumation, in order to protect the normal operation of the other intervals. But the failure also led to the 4th line the rest of the site train operators affected by slow or delayed causing part of the site passenger congestion. The Beijing Subway departments are repair, the MTRC and police is an orderly flow of passengers. For your safety, all in Shandong the Chuanghui Electronic Technology Development Co., Ltd. www.qttcy.com.cn