Intelligent traffic in Jondal

Intelligent traffic in Jondal

The Jondal road tunnel connects Kvinnherad with Jondal on the west coast of Norway. The tunnel is designed to improve the traffic between the two largest cities in Norway, Bergen and Oslo. TRAFSYS has delivered many ITS solutions to this tunnel, including PREVISION, a user-friendly traffic management system.

Emergency telephones, radio system, LED signals and radar detection from TRAFSYS

TRAFSYS has installed a range of intelligent traffic solutions (ITS) inside the 10,6 kilometer long Jondal tunnel. This includes a radio system with a dedicated communications network for the emergency services, Norphonic roadside telephones, variable LED signs and an energy-saving radar detection system, which is used to switch on and of the tunnel lights when a car approaches the tunnel. All these systems are connected to PREVISION, which is an intelligent traffic management solutions developed by TRAFSYS.

PREVISION – manage tunnel traffic in real time

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 or the fire extinguishers 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 thereby handle the traffic challenges effectively, which results in improved people-safety as well as improved traffic flow.

PREVISION – providing expert advice

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 – further ensuring that measured responses are taken.

PREVISION is based on open international standards and can take input from any OPC based automation system. This means that the system is both cost-effective and future-proof. -The PREVISION system can be expanded in tandem with the user needs.

A proven solution – flexible and scalable

PREVISION is a proven technology. It is used to monitor and control over 350 tunnels, bridges and mountain passes in Norway (over 30,000 objects). Some examples include: the Lærdal tunnel – the world's longest road tunnel (24,5 km), the T-connection tunnel (8,9 km), Hardanger bridge - the longest suspesion bridge in Europe, Bømlafjord tunnel – Europe's longest undersea tunnel (7,9 km) and Ulriken railway tunnel in Bergen (7,6 km).

PREVISION is also used to manage Norway's most famous mountain passes, including Haukelifjell, Filefjell, Hardangervidda, Hemsedalsfjellet, Vikafjellet, and Strynefjellet.

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