IMPROVED DRIVER SAFETY & REDUCED ENERGY CONSUMPTION Offering better visibility along with reduced energy consumption and maintenance costs, Current, powered by GE has delivered Turkey's very first LED tunnel lighting solutions – which are improving road safety in two of the country's major vehicle tunnels.

1. OUTDOOR
solution
Improved driver safety &
reduced energy consumption
in Istanbul's Major Road Tunnels
Ayazağa & Beyerbeyi Tunnels Turkey

2. Ayazağa & Beyerbeyi
Tunnels Turkey
Challenge.
Istanbul Metropolitan Municipality wanted to change the old,
outdated lamps in Ayazağa and Beylerbeyi tunnels, the two
busiest roadways of the city. With responsibility for
maintaining public infrastructure in a safe and efficient
manner, the municipality was keen to reduce energy costs,
while simultaneously improving the overall illumination within
the tunnels.
Solution.
Regarding the contrast between the external and internal
environment, Current, powered by GE put together an easiliy
controllable lighting design to minimize the adaptation drivers’
eyes need to make as they enter the tunnels. By providing a
clearer quality of white light and higher colour rendering, LED
solution allows precision illumination of the carriageway, while
decreases glare.
What’s more, the modern LED lighting consumes far less
energy and results 100 tonnes reduction of CO2 emissions
annually.
Key Benefits.
• Easily controllable lighting design
• Better level of illumination
• Greatly improved road safety
• Highly durable and reliable product
• Quick and tool-less maintenance
• Decreased energy consumption
• Reduction in CO2 emission

3. Luminaire type Outdoor lighting solutions
Main characteristics New installation
Light source TLBt & TMBt
Lumens (lm) 3000 - 15200
Wattage (W) 32 - 153
Service life (hours) > 60 000
CRI (Ra) > 70
CCT (K) 4000
significant
annual reduction
in CO2 emissions
Solution
provides.
3,5
decreased
maintanance
time and costs
better visibility &
enhanced road safety
high durability:
60 000
hours lifetime
TLBt
Ayazağa & Beyerbeyi Tunnels Turkey
years
ROI:
46%
annual energy
saving in
Ayazaga tunnel
TMBt

4. Easily controllable illumination
& greatly improved visibility
“As two of the busiest roadways in the city, safety was our biggest
consideration. Choosing an LED solution has meant that we are
able to control the illumination levels much more easily, which in
turn has greatly improved visibility and driver reaction times. The
number of collisions has significantly decreased since we installed
the LED solution, which is a major indicator of success for us.”
Yusuf Boyraz, Electrical Engineer at Istanbul Metropolitan Municipality.

5. www.gelighting.com