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Author Luo, Wei (ed)
Title Outdoor lighting – Mesopic photometry, adaptation conditions and user preferences in pedestrian way lighting Type (up) Book Whole
Year 2014 Publication Abbreviated Journal
Volume Issue Pages
Keywords
Abstract The starting point of this work is to review the current recommendations and criteria of road and pedestrian way lighting. At present, the emphasis of traffic safety, the increasing energy costs, and improvements in mesopic photometry have led to new discussions about the accuracy of the recommendations for road lighting. Sufficient road lighting is generally based on the lighting requirements given in different lighting classes.



For road lighting, the value of 2 cd/m2 is recommended as the minimum average road surface luminance for the highest lighting class in the CIE and CEN publications. The basis of the average road surface luminance for the lower lighting classes is unknown and lacks experimental works. Moreover, the experimental set-ups of the studies conducted in the 1930s and 1950s do not meet the conditions of motor traffic lighting nowadays. They also have deficiencies in the number and age distributions of the subjects. The values of the average horizontal illuminances of the pedestrian way lighting recommendations are based on studies conducted in the 1970s and 1980s. However, no information exists on how the recommended illuminance values are derived for the different lighting classes.

The current recommendations for outdoor lighting are based on photopic photometry, this is daylight visibility conditions. In outdoor lighting, the luminances are in the mesopic range. The CIE recommended system for mesopic photometry should be used in providing recommendations and criteria for both road and pedestrian way lighting. Before implementing mesopic photometry, the adaptation luminance of the road users should be known. This study examined the adaptation conditions of pedestrians based on eye-tracking measurements. A case study in a pedestrian way was conducted in Chongqing of China. The study is related to the currently ongoing task of the CIE JCT-1 Implementation of CIE 191 System for Mesopic Photometry in Outdoor Lighting, which is to investigate adaptation and viewing conditions and define visual adaptation fields in outdoor lighting. The case study consisted of eye-tracking measurements and subjective evaluations of the lighting conditions.



It was found that the eye-fixation areas and locations were around a central area of the road surface in the horizontal level but spread over a wider area in the vertical level. The subjective importance of facial recognition depends on the specific visual tasks at different light levels in a pedestrian way. The results also suggest that further studies using an eye-tracking system could combine eye-fixation data with pupil size and luminance data. This would help in further analysis of visual adaptation fields of the road users.
Address Department of Electrical Engineering and Automation, Aalto University, Finland
Corporate Author Thesis Ph.D. thesis
Publisher Place of Publication Editor Luo, Wei
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Notes Approved no
Call Number IDA @ john @ Serial 340
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Author Baumeister, J.
Title Adaptives Stadtlicht: Untersuchung einer sich an Passanten und Umweltbedingungen anpassenden LED-Beleuchtung urbaner Räume. Braunschweig: Technische Universität Carolo-Wilhelmina. Type (up) Book Whole
Year 2008 Publication Technische Universität Braunschweig Abbreviated Journal
Volume Issue Pages
Keywords Society
Abstract
Address
Corporate Author Thesis Doctoral thesis
Publisher Place of Publication Editor
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Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 992
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Author Arnold, V. (ed)
Title Als das Licht kam: Erinnerungen an die Elektrifizierung Type (up) Book Whole
Year 1986 Publication Wien, Köln, Graz. Böhlau Abbreviated Journal
Volume Issue Pages
Keywords Society
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor Arnold, V.
Language Summary Language Original Title
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Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 989
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Author Held, M.; Hölker, F.; Jessel, B.
Title Schutz der Nacht – Lichtverschmutzung, Biodiversität und Nachtlandschaft. Type (up) Book Whole
Year 2013 Publication BfN-Skripten Abbreviated Journal
Volume 336 Issue Pages
Keywords Ecology
Abstract
Address
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Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 681
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Author Böttcher, M.
Title Auswirkungen von Fremdlicht auf die Fauna im Rahmen von Eingriffen in Natur und Landschaft. Type (up) Book Whole
Year 2001 Publication Bonn: Bundesamt für Naturschutz Abbreviated Journal
Volume Issue Pages 192
Keywords Animals
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language German Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 694
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