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Light & Engineering 26 (2)

Light & Engineering 26 (2)

Volume 26
Date of publication 07/01/2018
Pages 99-109


Advancement in Road Lighting . L&E 26 (2) 2018
Articles authors:
Sanaz Bozorg Chenani, Rami-Samuli Rasanen , Eino Tetri

Doctoral candidate, has got her Master Degree from Royal Institute of Technology, Stockholm, Sweden in 2012. At present, she is a Ph.D. student in Transportation Engineering group at Built Environment Department, Aalto University, Finland. Her research interest areas include road lighting, traffic safety, traffic simulation, and traffic management

Doctoral candidate, has got Master Degree from University of Helsinki and Aalto University with specializing in economics and innovation management. At present, he is a Ph.D. candidate at the Department of Management Studies of the Business School of Aalto University, Finland. His research interests include assessment of emerging technologies and management of sustainable industrial transition with special focus on the lighting field

Dr. of Science, graduated from Helsinki University of Technology in 2001. His interest areas are light sources, LEDs, energy efficient lighting, outdoor and indoor lighting

Road lighting is on the verge of one of the most attentive changes since its first introduction. The synergetic effect of the advancement of road lighting technology and usage pattern is going to change the concept of road lighting. By most estimates, light emitting diodes (LEDs) are the most energy efficient light sources that can be used in road lighting. Today, the energy saving potential when replacing HPS lamps with LED luminaires is one-third with current technology and two-thirds with improved technology in the future. This technological transformation has the potential of energy saving up to 83 % in comparison with HPS lamps. The energy saving is achievable with changing the pattern of use by intelligent road lighting control based on reducing burning hours. Intelligent road lighting can be based on such parameters as traffic density, ambient light, road condition and weather circumstances. It can also be more dynamic and consider the combined effect of road lighting and individual car headlights. The widespread adaptation of these emerging technologies is envisioned to lead towards more sustainable lighting.
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