Study Of Visual Environment Design In Tunnel Group Based On Visual Illusion

The driver mainly through the visual getting the surrounding environment of traffic information,when drive in the highway tunnel group,the driver's visual environment will change frequently in a short period,and the visual light-dark adaptation repeated seriously affects perception process of information,which will effects driver's psychological and physiological greatly and is prone to illusion,resulting in the occurrence of traffic accidents.This paper use the theory and method of traffic engineering,traffic psychology,ergonomics and visual simulation for reference,using the 3ds Max software making simulation video of highway tunnel group,and using E-prime2.0 software construct psychological experiment platform for psychophysical experiments,take the Stimulation of Subjectively Equal Speed,the accuracy of speed judgment and reaction time as index,quantitative analysis the drivers illusion in highway tunnel group,and proposed the methods based on visual reference system reconstruction to improve environment of highway tunnel group and design the multi color rhythm marking system of highway tunnel group.The results show that(1)high-frequency visual information(2Hz~32Hz)may lead to drivers' overestimation of vehicle speed in tunnels with standard illumination,while the medium(0.4Hz~1Hz)and low-frequency(0.1Hz~0.2Hz)visual information contributes to speed underestimation.The medium-scale information has the largest speed overestimation effect followed by the large-scale and small-scale information,respectively(there are significant difference for 2Hz~8Hz).The medium-scale visual information below 8 Hz has the lowest degree of dispersion of speed perception.(2)high-frequency visual information and medium-frequency visual information effectively control the drivers' visual illusion at the appropriate level in the tunnel,which beneficial to the active control speed of driver,so as to effective realize the unity of tunnel traffic safety and energy-saving lighting.(3)driver will appear visual fatigue phenomenon which cause decreasing the drivers' speed perceptual and accurate and increasing the reaction time,and the phenomenon is related to travel time.the rhythm marking system of tunnel can significantly enhance the drivers' accuracy of speed judgment when drive in the tunnel,there is no significant relationship between reaction time and driving time in tunnel,after use the rhythm marking system of tunnel,can effectively alleviate the phenomenon of visual fatigue.(4)when the travel time is 10~90s,the reaction time of driver in Ordinary highway tunnels,using monochromatic color rhythm marking system and multi-color rhythm marking system of highway tunnel group sections can fit BiDoseResp,and reaction time showed ladder form rise,with travelling time increases the accuracy of speed judgment decreases.(5)Combining the speed is 80km/h,the rhythm marking system in highway tunnel optimal suitable for 1500~2000m sections of long tunnel;monochrome color rhythm marking system optimal suitable for length 1500m~3000m highway tunnel group sections;multi-color rhythm marking system optimal suitable for length 1500~3700m highway tunnel group sections;at 50% standard illumination,multi-color rhythm marking system optimal suitable for length is less than 1500 m highway tunnel group section.Color changes can effectively alleviate the driver's fatigue and improve the driver's reaction time.(6)The high pressure sodium lamp and rhythm marking system combination scheme is feasible in economy,it is recommended to use high pressure sodium lamp and rhythm marking system combination scheme that at 75% the rate of light on.