Study on the Influence of Beam Angle and Tunnel Wall Reflectivity on Tunnel Lighting Effects

Abstract

DIAlux is used to study the influence of the wall light reflectivity (20%, 40%, 60% and 80%) and beam angle (30°, 60°, 100°) of lamps on the tunnel lighting effects in basic and outlet sections of a tunnel. Contrastive study include two aspects: overall and longitudinal uniformity of road surface luminance. Uniformity data numerical calculation is in the method of CIE. According to the results, beam angle has a great influence on the lighting effects, but reflectivity of tunnel wall has a little influence on the lighting effects.