FLIR was selected to provide intelligent dual-vision cameras with embedded Automatic Incident Detection (AID) to be installed in the new Hundvåg and Eiganes tunnels in
The Ryfast project consists of three tunnels. The 14.4 km Ryfylke tunnel, running from the village of Tau to the isle of Hundvåg, was opened in
332 FLIR ITS Dual AID cameras have been installed in the Hundvåg and Eiganes tunnels.
Safety in dense traffic
When the
For both tunnels, Nordic system integrator Trafsys was selected to supply the Traffic Control & Monitoring system, Video surveillance (CCTV) and Automatic Incident Detection (AID), among other things. Trafsys again selected
"We were already convinced of the stability of FLIR's incident detection systems, because we have been using them in previous tunnel projects," says
The FLIR ITS Series Dual AID camera provides critical information on traffic incidents, including stopped vehicles, sudden speed drops, wrong-way drivers, pedestrians, fallen objects, and starting fires.
Note to graphic designer: people in the visual image need to be blurred
Visual and thermal in one camera
Trafsys chose FLIR's ITS Series Dual AID cameras, which combine a thermal and visual camera with FLIR's advanced video analytics. In total, 332 FLIR cameras have been installed in the Hundvåg and Eiganes tunnels combined.
With the thermal imaging camera, the FLIR ITS Series Dual AID provides critical information on traffic incidents, including stopped vehicles, sudden speed drops, wrong-way drivers, pedestrians, fallen objects, and starting fires. Operators also use the high-resolution (640 x 512 pixels) thermal image to verify the incident and to see where the incident took place.
The use of thermal imaging cameras has especially proven valuable for tunnel entrances and exits. There, shadows or direct sunlight could obstruct the view of the visible-light camera and therefore disturb traffic detection. Because they detect heat, not light, thermal cameras have no issues with these phenomena and as a result, they can detect traffic 24/7, in all weather conditions.
"When you look at the complex topography of the Hundvåg and Eiganes tunnels, a camera system like the FLIR ITS Series Dual AID is the most efficient technology choice," says Knut-Olav. "And with the many bends and turns in both tunnels, you need appropriate detection systems at many different positions."
"The cameras' daily performance is excellent," says
"We are honored to be selected for this major tunnel safety project," says
Safety is critical, given the dense traffic situation in the twin-bore tunnels - 10,000 and 35,000 daily vehicles for the Hundvåg and Eiganes tunnels respectively.
Early fire detection
"Apart from the great detection performance we are used to from FLIR, having a combined visual and thermal camera from one vendor has nothing but benefits," says Knut-Olav. "Combining both cameras into one detection unit makes it a very compact solution, and cabling is also much simpler."
The dual cameras' fire detection functionality has also been switched on to demonstrate the early detection capability within seconds of the appearance of visible flames. This could be crucial for tunnel operators to close the tunnel fast and take the necessary decisions in the case of a fire. The thermal technology from FLIR ITS also allows to see through smoke. This allows operators to detect the presence of pedestrians and vehicles in a smoke-filled traffic tunnel.
The fire detection functionality was already demonstrated when a car caught fire in the Hundvåg tunnel in
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