1. Case Studies

Marieholmstunneln

An empty, modern tunnel with a gently curving road, illuminated by bright overhead lights. The walls are lined with white tiles and accented by red panels, with a green emergency exit door visible on the left.
Client
Swedish Transport Administration​
Project location
Gothenburg, Sweden
Project date
2020
Installation Partner
STRABAG Infrastructure
A modern road tunnel with a gently curving lane, illuminated by red ceiling lights and white wall lighting. The walls are lined with tiles, and a green emergency exit door is visible on the right.

Enhancing Traffic Flow with Advanced Tunnel Lighting

The Marieholm Tunnel in Gothenburg is a crucial infrastructure project, forming part of the Marieholm connection that links key highways (E20, E6, E45, and Lundbyleden). The goal was to improve traffic flow and connectivity while minimising environmental impact in a high-traffic area. A major challenge was implementing a state-of-the-art lighting solution that ensures visibility, safety, and energy efficiency in one of Sweden’s most demanding tunnel environments.

Products

A modern road tunnel with a striking red ceiling illuminated by linear lights. The tiled walls feature a green emergency exit door, creating a bold contrast against the surrounding neutral tones.

Precision-Engineered LED Lighting for Optimal Visibility

Thorn Lighting provided the GTLED tunnel luminaire, designed specifically for highly corrosive and demanding environments. Counterbeam optics enhance visibility in entrance and transition zones, while a bi-symmetrical optic ensures seamless illumination in the tunnel’s inner sections. The system dynamically adjusts brightness from 200 cd/m² during the day to just 2.5 cd/m² at night, adapting to external daylight conditions for maximum safety and efficiency.
A close-up view of modern LED lighting fixtures installed in a tunnel, emitting bright white light. The red-painted ceiling and textured wall create a striking contrast with the sleek, linear design of the luminaires.

Long-Lasting Performance with Low Maintenance

GTLED is built for longevity, with an innovative stainless steel mounting system that withstands harsh conditions. The luminaire offers exceptional durability, minimising maintenance needs while providing consistent, glare-free illumination. Additionally, the discreet Fino linear luminaire from acdc enhances architectural aesthetics with soft, colored lighting. This lighting solution not only improves road safety but also sets a new benchmark for energy efficiency and sustainability in tunnel illumination.
An entrance to a modern road tunnel at dusk, featuring curved red walls and bright linear LED lights illuminating the interior. A parked truck is visible on the left, while a green emergency exit door stands out in the background.

"Thorn’s GTLED tunnel lighting ensures maximum road safety, durability, and energy efficiency - delivering seamless visibility with minimal maintenance in one of Sweden’s most demanding tunnel environments."

Downloads

GTLED Pro Product Brochure (EN)
1.67 MB
GTLED Pro Product Brochure (IT)
1.67 MB
Tunnel Application iPDF (EN)
5.61 MB
Tunnel Application iPDF (IT)
5.61 MB
Tunnel Application Brochure (EN)
8.78 MB
Tunnel Application Brochure (IT)
8.79 MB

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High-performance tunnel lighting from entrance to exit

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