A highly advanced system by Thorn – part of Austrian Zumtobel Group – GTLED, a tunnel luminaire with LED technology for very corrosive and demanding environments was installed. Counter beam optics are used in the tunnel's entrance and transition zones. In the inner zone, a bi-symmetrical optic is used in a linear configuration throughout the tunnel, which provides perfect smoothness. The solution provides light levels in a range from 200 cd / m2 during the day at the entrance zone, and down to 2.5 cd / m2 at night. The lighting levels in the tunnel are adapted to the daylight conditions. Visually disturbing glare (TI), an important criterion for tunnel lighting, shows an extra low value at only 2-3% for this installation. GTLED is designed to last for many years in corrosive environments. The luminaire also has an innovative mounting system made of stainless steel.
Fino, a linear and discreet luminaire by another member of the Zumtobel family, acdc, has been beautifully integrated providing coloured light feature.
While Thorn of Zumtobel Group provided the advanced fixtures Austrian STRABAG Infrastructure & Safety Solutions was in charge of the intricate installations.