The first tunnel to have the so-called TunnelAlert system installed will be the Rotherhithe Tunnel in the
When an incident occurs in a particular tunnel bore, the system is switched in with the effect of replacing the audio on all the DAB audio services being re-broadcast in that tunnel bore with a live emergency message, providing the occupants of the vehicles in the tunnel with appropriate instructions.
Systems have been in existence to deliver this service on FM for some time but RadioScape claims to be the first company to provide systems for DAB.
Prompted by the
There are over 2000 tunnels in