Is it possible to achieve quality lighting without considering the photometry of the pavements?

Abstract

In this study, the photometry of a wide range of conventional and innovative pavements used in urban and interurban areas was characterised with a laboratory gonioreflectometer, both in new condition and after 30 months of natural ageing. An extreme diversity of behaviour with respect to light reflection has been demonstrated, both over time and between pavements. Various lighting studies have been carried out for cases of renewal of lighting installation with the installation of LED luminaires on poles in place. The calculations have shown that the use of typical CIE r-tables almost systematically leads to non-compliance with the EN 13201 standard, particularly in terms of uniformity. On the other hand, taking into account in the calculations, the photometry of the pavement in its stabilised state makes it possible both to respect the challenges of lighting safety and to achieve significant energy savings. As measurements of pavement photometry are rarely carried out, an alternative is to set up a database of urban pavements, which is one of the achievements of this research.

Editorial: Special issue on the CIE 2021 Midterm Meeting

“…The CIE 2021 Midterm Meeting also was the first CIE conference to recognize the best papers with awards. The three award-winning papers lead the Table of Contents of this special issue: Muzet et al 1 received the CIE 2021 Best Oral Paper award for an investigation of pavement photometric properties leading to recommendations for roadway lighting retrofits that would both save energy and improve safety. Uttley et al 2 used archival data of cycle path use in Norway together with reports from other latitudes to understand the role of darkness in explaining cycle frequency, for which they received the CIE 2021 Best Poster Paper award.…”

“…The CIE 2021 Midterm Meeting also was the first CIE conference to recognize the best papers with awards. The three award-winning papers lead the Table of Contents of this special issue: Muzet et al 1 an international standard could be written. (The selected paper from Division 8, Image Technology, is under consideration for a regular issue of this journal.…”