TRAFSYS has installed a range of intelligent traffic solutions (ITS) inside the 10,6 km tunnel, including a radio system with a dedicated channels for the emergency services, Norphonic roadside telephones, variable LED signs and an energy-saving radar detection system, which automatically switch on the lights when a car approaches the tunnel. All systems are connected to PREVISION, which is an intelligent traffic management solutions developed by TRAFSYS.
Using PREVISION, the operator located at the remote Traffic Management Centre (Veitrafikksentralen - VTS) in Bergen, can manage and control the traffic inside the tunnel in real time. This is particularly useful in emergency situations such as road traffic accidents or in case of a tunnel fire. When the Norphonic emergency telephones are used, the operator will receive a message about the exact location of the road user. The operator will also have the possibility to give messages to the traffic users by overriding the radio broadcasts in the tunnel, or by controlling the variable LED signs inside the tunnel. Using PREVISION, the Traffic Management Centre can handle the traffic challenges effectively, which results in improved people-safety as well as improved traffic flow.
If a critical situation should occur, PREVISION can use pre-prepared information about emergency or evacuation plans to give useful advice to the traffic operator. This saves a lot of time in an emergency situation, and also ensures that measured responses are given to individual situations. PREVISION also ensures that the operator is not bombarded with meaningless follow-up alarms from equipment, as alarms can be split into different levels. PREVISION is based on open international standards and can take input from any OPC based automation system. This means that the system is future-proof as it can be expanded in tandem with the user needs.Print