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Road Surface Photometric Characterisation and Its Impact on Energy Savings

1
Trafikverket, 17290 Sundbyberg, Sweden
2
Research Institutes of Sweden (RISE), 50115 Borås, Sweden
3
Project-Team ENDSUM (Non Destructive Evaluation of StrUctures and Materials), CEREMA, 67035 Strasbourg, France
4
Istituto Nazionale di Ricerca Metrologica (INRIM), 10135 Torino, Italy
*
Author to whom correspondence should be addressed.
Coatings 2019, 9(5), 286; https://doi.org/10.3390/coatings9050286
Received: 30 March 2019 / Revised: 23 April 2019 / Accepted: 24 April 2019 / Published: 26 April 2019
(This article belongs to the Special Issue Pavement Surface Coatings)
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PDF [1844 KB, uploaded 10 May 2019]
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Abstract

How road surfaces reflect light in space is a physical characteristic that plays a key role in the design of road lighting installations: by European Standards the average luminance is the target quantity to assure the required safety conditions of the motorized road traffic. Lighting systems are designed (luminous flux installed per kilometre) to comply with the above requirement, starting from reference values of road surfaces reflection published in an old scientific document. These data are obsolete and not representative of current road surfaces, but they are still used to design current LED lighting systems. European Community funded a SURFACE project to provide to EU standard organization new traceable reference data, representative of current road surfaces used in EU. The paper presents the data collections and the impact on road lighting of using available old reference data versus SURFACE collected data of current road surfaces. Results highlight advantages in using bright pavements as well the need for introducing systems for flux control in road lighting installation to compensate for the discrepancies between current reference data and actual road surface data. View Full-Text
Keywords: road surface; luminance coefficient q; road lighting; energy savings; road users safety; EMPIR; EURAMET; Surface 16NRM02 project road surface; luminance coefficient q; road lighting; energy savings; road users safety; EMPIR; EURAMET; Surface 16NRM02 project
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Gidlund, H.; Lindgren, M.; Muzet, V.; Rossi, G.; Iacomussi, P. Road Surface Photometric Characterisation and Its Impact on Energy Savings. Coatings 2019, 9, 286.

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