Tunnel Lighting Optimisation Study Based on Sunshade

Abstract

With the increasing construction of tunnels in mountainous areas and complex terrains, tunnel lighting design has become crucial in reducing tunnel traffic accidents and enhancing driving safety. In this study, we optimize tunnel lighting settings by conducting scaled-down experiments and combining the luminance adaptation curves of the human eye published by the CIE. We conclude that the addition of multi-transmittance awnings in tunnels can effectively reduce the luminance outside the tunnels, thus mitigating the "black hole effect." The tunnel lighting model with awnings is estimated to save 30% of the annual electricity costs from an economic perspective. This study offers new ideas and methods for the optimal design of tunnel lighting, which is an important reference for future tunnel construction and lighting design.

Keywords: road tunnels, Sunshade, DIALux, safety, energy efficiency