Viaduct part,R1 has been cut through.

　　On December 19th the viaduct of R1, the rail transit has been cut through, unveiling the first national undressed rail transit. The real time information of PM2.5、PM10,noise,temperature and humidity are exhibited on the big screen on construction site where stereo spray system, infrared imaging detection system are managed by smart controlling, realizing green and environment-friendly construction.