Taking into account the actual photometric characteristics of a road surface to design and then adjust a lighting installation is seldom done. In a lighting renovation, one of the Commission Internationale de l'Eclairage's standard r-tables is arbitrarily chosen although they are no longer representative of the characteristics of current road surfaces. The objective of the study is to assess an optimized, evolutive pavement and lighting combination, called Lumiroute®. To do this, two conventional designed sections were compared with two Lumiroute® sections. On-site measurements of road photometry, luminance and power consumption were conducted at regular intervals for three years. This paper presents the results of the photometric study together with an economic analysis. The Lumiroute® sections offer optimized performance and increased efficiency in comparison with the ordinary sections, particularly with regard to light and energy performance.

Adapting light distributions of luminaires to different types of road surfaces when new and also along their lifetime remains a challenge. In this paper, we present the assessment, over its first three years, of an innovative compared to a conventional infrastructure renovation. The innovative solution, called Lumiroute®, integrates both a light road surface and LED lighting that can be tuned to follow the evolution of the road surface photometry. Regular on-site evaluation of the conventional and photometric characteristics of the pavements and the luminance perceived by the driver over time were performed. This paper presents the outcome of this experiment, in terms of photometry, energy consumption, obtrusive light and financial aspects of the project.