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Perceived Lighting Uniformity on Pedestrian Roads: From an Architectural Perspective
Jönköping University, School of Engineering, JTH, Civil Engineering and Lighting Science.ORCID iD: 0000-0003-0574-3850
Department of Environmental and Biosciences, Rydberg Laboratory of Applied Science (RLAS), School of Business, Engineering and Science, Halmstad University, Halmstad, Sweden.ORCID iD: 0000-0001-5322-9827
2021 (English)In: Energies, E-ISSN 1996-1073, Vol. 14, no 12, article id 3647Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
MDPI, 2021. Vol. 14, no 12, article id 3647
Keywords [en]
lighting, uniformity, light distribution, pedestrian, road lighting, street lighting, urban space, exterior lighting, architectural lighting, qualitative method
National Category
Architectural Engineering
Identifiers
URN: urn:nbn:se:hj:diva-53467DOI: 10.3390/en14123647ISI: 000666154300001Scopus ID: 2-s2.0-85108897973Local ID: GOA;;53467OAI: oai:DiVA.org:hj-53467DiVA, id: diva2:1569790
Funder
Bertil & Britt Svenssons Stiftelse för Belysningsteknik, 2018 höst ‐11/184082
Note

This article belongs to the Special Issue: Research in Several Aspects of Outdoor Lighting: Energy, Sustainability, Safety, and Visual Perception.

Available from: 2021-06-21 Created: 2021-06-21 Last updated: 2023-08-28Bibliographically approved

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Wänström Lindh, UlrikaJägerbrand, Annika K.

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