Tunnels have very specific demands due to limited access for maintenance and a harsh interior environment. When Ankara Municipality required an up-to-date lighting solution for the Celal Bayar Boulevard tunnels it looked to GE Lighting to provide reliable, trusted roadway lighting solutions. Long life was a key priority and GE’s Tunnel LED system was the perfect answer, as it achieves six years of 24 hours usage life, together with better light uniformity and lux levels when compared to conventional HID systems.

1. Reference Project
Outdoor Lighting
Ankara Tunnel Turkey
Low glare
& high uniformity

2. GE solution
Working closely with the EGS Engineering Project
Team, GE Lighting proposed 260 pieces of its 90W
Tunnel LED system. Offering the perfect combination
of aesthetics and functionality, the luminaire is ideal
for the efficient lighting of low speed tunnels and
underpasses.
Key Benefits
6 years of 24 hour using lifetime
44% reduction in energy using
163 000 KwH electricity consumption
per annum
57% reduction in operational cost
2,5 years payback time
Challenge
Changing the original HID system to a more energy
saving and low maintanced system to reduce the
closures of the tunnels for reparing the lighting. To
let the traffic ease and comfortably in and out of the
tunnel was also a key point, to avoid the ’black hole’
and the ’flicker’ effect
Outdoor Lighting Ankara tunnel Turkey
Tunnel LED

3. GE’s solution
provides
Luminaire type Outdoor Lighting Solution
Tunnel LED
MAIN CARACTERISTICS
INSTALLED
PRODUCT
Light source Tunnel LED
Wattage 90
CCT 5700 K
CRI 70
Lumen output 5400
IP IP66
Service life (hours) 50 000 hr @ L70
Operating temperature ( C) -30 C to +40 C
Outdoor Lighting Ankara tunnel Turkey
2,5 years
payback
57% operational
cost reduction
44%energy using
reduction

4. “It was very important for the city to achieve the best possible illuminance level,
without creating glare in the tunnels. Our LED Tunnel fixture uses an optical
system that provides high uniformity and excellent vertical light distribution with
reduced glare. This creates a safe environment for traffic in terms of improved
visibility and comfort.” – said Selcuk Mert, Sales General Manager of GE Lighting Turkey
Low glare &
high uniformity