Packing Retainer,Retainer Container,Veamor Retainer Case
Ningbo Hinix Hardware Industry & Trade Co., Ltd , https://www.hinixpack.com
The role of tunnel emergency broadcast function
Tunnel broadcasting refers to the introduction of ground wireless FM broadcasting into tunnel broadcasting, so that vehicles driving in the tunnel can also listen to FM FM broadcasting signals. This system is a tunnel wireless broadcasting coverage system.
Tunnel broadcasting refers to the FM broadcasting system for signal coverage in the tunnel. There are currently many highway tunnels and urban tunnels in our country, some of which are more than ten kilometers long. After vehicles enter the tunnel, the ground broadcast signal cannot be heard. Moreover, once an accident occurs in the tunnel, the moving vehicles cannot obtain information, and it is easy to cause major secondary injuries.
At the same time, the tunnel broadcast system also has a "group carrier" emergency broadcast function. Once an accident occurs in the tunnel, the system will automatically switch to the emergency broadcast channel, no matter which radio program the car radio listens to, it will automatically switch to the emergency broadcast signal. It plays a very important role in tunnel management.