Perceived Lighting Uniformity on Pedestrian Roads: From an Architectural Perspective

Ulrika Wänström Lindh and Annika K. Jägerbrand
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Ulrika Wänström Lindh: Department of Construction Engineering and Lighting Science, School of Engineering, Jönköping University, P.O. Box 1026, SE-551 11 Jönköping, Sweden
Annika K. Jägerbrand: Department of Environmental and Biosciences, Rydberg Laboratory of Applied Science (RLAS), School of Business, Engineering and Science, Halmstad University, P.O. Box 823, SE-301 18 Halmstad, Sweden

Energies, 2021, vol. 14, issue 12, 1-20

Abstract: Lighting uniformity is a key factor in traffic safety, and it could even result in energy savings for light installations. However, highly uniform horizontal road lighting for motorized vehicles may not be optimal for pedestrian roads. Therefore, it is important to evaluate the way in which pedestrians experience road lighting uniformity. Accordingly, we employed a qualitative approach to examine pedestrian road lighting uniformity. Visual analyses were used to exemplify and discuss the perceived uniformity. The case studies were performed on three pedestrian roads with similar light installations. The results show that the experience of road lighting uniformity differs substantially between the three roads. Based on the case studies, there are many aspects that need to be considered beyond the light falling on the horizontal surfaces. This study suggests that the visual experience of road lighting uniformity for pedestrians is difficult to estimate with photometric values because the visual impact of uniformity is highly influenced by the spatial context and landscape.

Keywords: lighting; uniformity; light distribution; pedestrian; road lighting; street lighting; urban space; exterior lighting; architectural lighting; qualitative method (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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