Beijing Subway Line 4 has successfully passed Running-light test

Recently, Beijing Subway Line 4 has successfully passed Running-light test. TongfangDigitalCity provided testing and supports for the engineering environment and BAS system. By fully auto-monitor and control the internal subway electromechanical device, Subway Line 4 becomes more efficient and safe. Up to now, TongfangDigitalCity s BAS system has completely covered 14 subway stations.