Nanjing Tunnel Accident Should Escape Daquan Baked
"Urban tunnel is no set standard on the means of escape
, but we all do in the light tunnel." Experts say, in addition to pedestrian access, all the tunnel every 750 meters, there is a traffic channel, if the side of the tunnel accident can quickly turn around opening to another tunnel and escape.
Nanjing Tunnel Accident Should Escape Daquan Baked