Radio re-broadcast System enhances AM, FM, VHF and UHF RF signals inside the tunnel. The VHF & UHF frequencies are used by Patrol Teams as well as Emergency Services like Ambulance, Fire Brigade and Police and is useful for coordination amongst them so that Incident Management is ensured in an efficient and effective manner should an emergency occur inside the tunnel. In normal cases, AM-FM re-broadcast ensures that a commuter continues to listen to the radio station to which it is tuned. In emergency situation, AM, FM broadcast from the Control Room is also featured as part of this sub-system so that commuters who are tuned in can listen to instructions passed from the Control Room.
Traffic Management Control System
The Traffic Management Control System (TMCS) component in Road Tunnels consist of various sub-systems which act at feeds to the Tunnel Control Room to monitor, control & ensure safety inside the tunnel.
ASS's TMCS System orchestrates various complementary technologies to increase situational awareness and acts as a Decision Support System for Operators in the Tunnel Control Room. The solution helps to proactively manage vehicular movement inside the tunnel in a safe manner as well as enables one/two-way information flow between the Control Room and the Commuter. It also consists of sub-systems which enhance the travel experience of the commuter inside the tunnel.
Vehicle Over-Height Detectors are placed around a kilometer away from the entry to the tunnel so that if any over-sized vehicle is detected, requisite action is taken by the operational staff to restrict entry of that vehicle inside the tunnel to avoid damage and ensure safety of men and material.