The old lighting solution contained HPS HID fixtures using 400, 250 and 150 watts installed in both axles of the tunnel at a height of 3.75 m.
Tungsram, with its TLBT and TMBT fixtures series, offered an optimized solution with excellent uniformity and illumination not only from the horizontal plane but also from the vertical one that substantially upgrades the old solution. The fixtures used incorporate an optical system based on reflection and not on channeling through lenses. The light source (led) projects onto anodized and polished aluminum reflectors, obtaining excellent performance and the appropriate photometry at the same time. This system undoubtedly helps to minimize possible glare and feelings of discomfort users may have, since the light source (the LEDs) is set back (hidden) with respect to the plane that defines the glass that protects the fixture, thus avoiding direct vision and a wide range of led viewing angles.
The solution that made it possible to provide the tunnel with day and night lighting, according to current regulations, with 224 cd / m2 in the descending entrance, 180 cd / m2 in the ascending entrance and with 4 cd / m2 inside, was designed based on the installation of
- 110 units 2xTMBT / 350/4000 / C 350w lens
- 34 units 2xTMBT / 262/4000 / C 262w lens
- 30 units TMBT / 131/4000 / B 131w lens
- 36 units TLBT / 68/4000 / E5 68w lens
