Tunnel lighting
Induction lighting is installed in many important road tunnels like the St. Gotthard tunnel in Switzerland and the Laerdal tunnel in Norway. A reliable performance of the tunnel lighting system is critical. QL tunnel lighting solves the problem of costly maintenance due to its virtually maintenance free operation and ultra long life up to 100,000 hours.


Bright QL tunnel lighting provides maximum safety and comfort for tunnel traffic. Induction lighting offers a constant light and is flicker free. A stroboscopic effect is annoying for tunnel drivers. Most other lamps are point-light or line-light sources. QL Induction lighting is a source which has a bigger luminous surface and better uniformity. With a CRI greater than 80 and no glare, objects can be identified easily.


The new dimming capability can improve the energy efficiency even more. QL Induction lighting is now available where and when it is needed. The system offers a step-less dimming from 100% to 50% of the lamp power and energy consumption can be reduced by up to 40-45%.


• Maintenance free operation
• Ultra long life (100,000 hours)
• Constant light, flicker free
• Dimmable up to 50%
• Ra >80

Economical solution can be a retrofit with QL.