To evaluate the lighting environment quality and driving safety of low-position lighting in highway tunnels,this study simulated three lighting schemes(high-position,low-position,and low-position with auxiliary LED st...To evaluate the lighting environment quality and driving safety of low-position lighting in highway tunnels,this study simulated three lighting schemes(high-position,low-position,and low-position with auxiliary LED strips on maintaining road)using DIALux software for a two-lane unidirectional tunnel.Key parameters for low-position luminaires were optimized,and drivers'obstacle recognition reaction times,gaze distribution patterns and pupil diameter dynamics were tested by visual performance experiments.The results indicate that the optimal parameters for low-position lighting,when using flat light technology luminaires better adapted to low-position lighting,are as follows:lamp spacing of 6—7 m,mounting height of 1.1—1.3 m,staggered arrangement,and auxiliary lighting power of 1 W/m.Compared to high-position lighting,low-position lighting reduced the threshold increment by 47.1%,increased small target visibility by 569%,and shortened drivers'reaction times for near-roadway obstacles by 25%,significantly enhancing obstacle recognition.The pupil diameter variation rates across different lighting configurations all below 10%indicate that low-position lighting did not induce psychological states of tension or discomfort during driving.Although low-position lighting exhibited slightly lower longitudinal uniformity and longer reaction times for elevated targets,these limitations were effectively resolved by auxiliary LED strips.Overall,low-position lighting substantially improves driving safety and comfort in highway tunnels.展开更多
基金supported by the National Natural Science Foundation of China:smoke transport characteristics and control methods of the bifurcated tunnel fire under the effect of obstacle obstruction and personnel evacuation research(52478385)National Natural Science Foundation of China:study on pollutants migration characteristics and the energyefficiency optimization control of ventilation system in spiral highway tunnel(52278392)+2 种基金National Natural Science Foundation of China:study on pollutants migration characteristics and the energy-efficiency optimization control of ventilation system in spiral highway tunnel(52278392)Key R&D Program Project of Shaanxi Province:research on multi-source heterogeneous sensory data fusion-based early warning and posture prediction and control of fire in highway tunnels(2024SF-YBXM-654)Shaanxi Provincial Innovation Capacity Support Program:highway tunnel intelligent operation and safety,energy conservation and environmental protection innovation team(2023-CX-TD-35)。
文摘To evaluate the lighting environment quality and driving safety of low-position lighting in highway tunnels,this study simulated three lighting schemes(high-position,low-position,and low-position with auxiliary LED strips on maintaining road)using DIALux software for a two-lane unidirectional tunnel.Key parameters for low-position luminaires were optimized,and drivers'obstacle recognition reaction times,gaze distribution patterns and pupil diameter dynamics were tested by visual performance experiments.The results indicate that the optimal parameters for low-position lighting,when using flat light technology luminaires better adapted to low-position lighting,are as follows:lamp spacing of 6—7 m,mounting height of 1.1—1.3 m,staggered arrangement,and auxiliary lighting power of 1 W/m.Compared to high-position lighting,low-position lighting reduced the threshold increment by 47.1%,increased small target visibility by 569%,and shortened drivers'reaction times for near-roadway obstacles by 25%,significantly enhancing obstacle recognition.The pupil diameter variation rates across different lighting configurations all below 10%indicate that low-position lighting did not induce psychological states of tension or discomfort during driving.Although low-position lighting exhibited slightly lower longitudinal uniformity and longer reaction times for elevated targets,these limitations were effectively resolved by auxiliary LED strips.Overall,low-position lighting substantially improves driving safety and comfort in highway tunnels.
