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The effect of dimmed road lighting and car headlights on visibility in varying road surface conditions

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Bozorg Chenani, Sanaz
dc.contributor.author Tetri, Eino
dc.contributor.author Kosonen, Iisakki
dc.contributor.author Luttinen, Tapio
dc.date.accessioned 2018-11-02T08:43:57Z
dc.date.available 2018-11-02T08:43:57Z
dc.date.issued 2018-10-02
dc.identifier.citation Bozorg Chenani , S , Tetri , E , Kosonen , I & Luttinen , T 2018 , ' The effect of dimmed road lighting and car headlights on visibility in varying road surface conditions ' , LEUKOS , vol. 14 , no. 4 , pp. 259-273 . https://doi.org/10.1080/15502724.2018.1452152 en
dc.identifier.issn 1550-2724
dc.identifier.issn 1550-2716
dc.identifier.other PURE UUID: 46e201ee-612f-4a03-b7f3-bb517874a6f3
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/46e201ee-612f-4a03-b7f3-bb517874a6f3
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85054187202&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/28917702/ENG_Bozorg_Chenani_Sanaz_The_effect_of_dimmed_LEUKOS.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/34516
dc.description.abstract This article evaluates the potential of dimming road lighting in order to save energy and lower costs while avoiding any adverse effects on the visibility of drivers. An experimental study under varying road surface conditions was conducted to examine the combined effect of car headlights and different road lighting intensities on the visibility level. The luminance levels of the road surface, contrast and visibility level of the objects were measured from a stationary car under three road surface conditions: a) dry, b) wet, and c) snowy conditions. The results support the feasibility of reducing road lighting intensity when car headlights are available. When within the range of car headlights, road lighting did not improve the visibility level. In the presence of car headlights, the average luminance providing a sufficient visibility level was found to be 0.19, 0.63 and 0.75 cd/m2 under dry, wet and snow conditions, respectively. This would allow an energy savings of 317kWh/year/luminaire, representing savings of 80% luminaire/year for LED luminaires. en
dc.format.extent 15
dc.format.extent 259-273
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries LEUKOS en
dc.relation.ispartofseries Volume 14, issue 4 en
dc.rights openAccess en
dc.title The effect of dimmed road lighting and car headlights on visibility in varying road surface conditions en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Spatial Planning and Transportation Engineering
dc.contributor.department Department of Built Environment en
dc.subject.keyword Car headlights
dc.subject.keyword cost saving
dc.subject.keyword dimming
dc.subject.keyword energy saving
dc.subject.keyword road lightning
dc.subject.keyword road surface conditions
dc.subject.keyword visibility level
dc.identifier.urn URN:NBN:fi:aalto-201811025569
dc.identifier.doi 10.1080/15502724.2018.1452152
dc.type.version acceptedVersion

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