Monitoring of the subsequent LED lighting installation in Warsaw in the years 2014–2015

In recent years there has been a significant improvement in technical parameters of light-emitting diodes. LEDs are more and more frequently used for luminaire construction. Photometric parameters given by manufacturers (distributors) are neither complete nor reliable. As a result of the cooperation between Municipal Roads Authority (ZDM) in Warsaw and Lighting Division of the Warsaw University of Technology, arose the idea to verify such installations operating in practice. The next part of the trial street with experimental LED luminaires in Warsaw was selected for testing. In the years 2014-2015, the Lighting Division employees were monitoring the lighting conditions on the streets constantly. The results of the investigations were reported in this paper.