Anti-dazzle principle based design method for traffic engineering facilities at road tunnel exit

Abstract

The invention relates to an anti-dazzle principle based design method for traffic engineering facilities at a road tunnel exit. The method is characterized in that tunnel exit anti-dazzle facilities are arranged in front of the tunnel exit to ease intensive brightness transition caused by insufficient illuminating lamps at the tunnel exit; coloured painting materials of which reflection coefficients gradually reduce are arranged on the tunnel ceiling, side walls and roads from the top down to ease brightness transition and beam divergence at the tunnel exit, so as to lift the dazzle area, reduce the dazzle area below the visual line of a driver and increase the visual adaptation time; horizontal road direction lines and road lane keeping lines are arranged on the road, and side wall vertical direction lines and side wall double-layered contour marks are arranged on the side walls, so as to form a closed mid-frequency retroreflective information stream together; high-frequency red and white marked lines arranged on maintenance road edges and road side reflective raised route markers form a high frequency visual information stream to increase the driver's instantaneous velocity sensation, and promote the driver's speed feeling and distance feeling, and accordingly, the coordination and unification of the tunnel lighting energy conservation and tunnel traffic safety are realized.

Description

technical field [0001] The invention relates to a design method for traffic engineering facilities at highway tunnel exits based on the principle of anti-glare. By constructing a multi-color and multi-frequency stereoscopic visual information system for the tunnel ceiling, side walls, and road surface space, the coordination and unity of lighting energy saving and traffic safety at the tunnel exit can be achieved. . Background technique [0002] The lighting level at the exit of highway tunnels in the central and western regions is insufficient, and the brightness transition between inside and outside the tunnel is severe, which is prone to glare, making it difficult for drivers to find obstacles in front of them in time, and causing traffic accidents. With the rapid development of my country's expressways, especially in the central and western regions, there has been a big contradiction between tunnel lighting energy saving and operational safety. In order to reduce lighti...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is that in the case of a low tunnel lighting rate, the brightness transition of the tunnel exit is severe, and at the same time, there is a large brightness difference in the driver's field of vision, which is very prone to glare. The intensity of glare is mainly affected by factors such as the strength of the light source, the size of the surface area of ​​the light source, the background brightness of the light source, the relative position of the light source and the line of sight, the distribution of the divergence of the light beam in the field of view, and the adaptability of the eyes to the environment. Therefore, how to reduce the glare in the driver's field of vision, especially how to avoid large-area glare below the driver's line of sight height (not higher than 1.8m), and ease the brightness transition of the tunnel exit is the key technical problem to solve the tunnel exit glare

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