Journal
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
Volume 72, Issue -, Pages 114-119Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tust.2017.11.017
Keywords
Probeam lighting; Road tunnels; LED; Road security; Tunnel crossing
Funding
- Austrian Research Promotion Agency (FFG)
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In this study we employ a road tunnel model to simulate the crossing in a car at variable speeds using running LED-lights. Different lighting situations were created, namely symmetric-, counterbeam- and probeam lighting and were measured using a luminance camera. The results show that probeam lighting yields a much better object illumination than counter-beam- and symmetric-lighting while consuming the same amount of power as symmetric- and counterbeam lighting due to use of LED-technology. Based on this we argue that probeam lighting is a viable alternative to the commonly used counterbeam lighting in the interior zone of road tunnels.
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