Abstract:The semi-enclosed spatial structure of the urban tunnel determines that it can only be illuminated by the lighting system. The difference in brightness between the inside and outside of the urban tunnel will cause the driver to have a “black and white hole effect” when entering and leaving the tunnel, which affects the drivers acquisition and processing of visual information, and has certain accident risk. Taking the Nanjing Yangtze River Tunnel and the Yangtze River Tunnel as examples, the effects of lighting in two tunnels on the drivers gaze, glance, and blinking and other visual characteristics were compared and analyzed by the visual characteristics test of the driver driving in the tunnel. The research results show that the change of brightness intensity will affect the drivers gaze distribution, saccade amplitude and speed, blink frequency and duration. Finally, optimization suggestions were proposed from two aspects of brightness design and lighting layout.
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