Design Of Induced Traffic Information System Of Urban Tunnel-interchange Connection Sections

In recent years,the number of urban tunnel and interchanges and their type are more and more.No matter in the stage of design,construction or operation management,their safety guarantee system shall be under special attention.In particular systemic multiple point in and out of the way needs the induced information system to guide,and by impact of the special environmental,the driver's strong dependent on the induction information system,that guide information setting than ordinary roads have higher requirements.Urban tunnel is special road section of urban road,the tunnel space is narrow,visual environment is bad,it tends to become the bottleneck of the traffic.Illuminance violent of tunnel import and export Sharply transits,which makes the driver adapt to difficult light and shade,decrease visual acuity,be difficult to identify the traffic information;interchange is important traffic node of urban interchange,its information of direction sign is overload or insufficient,which makes the driver be difficult to identify the information,reduce traffic organization efficiency,cause traffic jams and traffic accidents easily.Urban tunnel-interchanges Connection Sections play the role of connecting and transformation,which makes the environment of urban tunnels and interchange is more complex,so it needs reasonable and effective guidance information to guide the driver safely,rapidly and accurately drive away.But the existing induced traffic information system of urban tunnel-interchanges connection sections exist problem of unreasonable design and ambiguity information and information overload or discontinuous,which needs to urgent to be solved.Based on the analysis of the impact of urban tunnel-interchanges' complex traffic environment on the driver's visual cognition and traffic behavior,using of the characteristics of constancy and high apparent intensity and high distinguishing degree of the color,set up a continuous and gradual change and three-dimensional and more color induced information system.This paper taking Wuhan Yangtze river tunnel and connected city overpass for example puts forward improvement scheme.In front of the entrance of the tunnel and ramp set the sign facilities,redesign the road sign and sign page,set up rhythm of the oriented design in the tunnel side wall,make the sign information combined with road route line,the road signs combined with color information,build a complete set of guiding visual reference system,that can ease the light and dark adaptation of tunnel section's influence on visual cognition of induced information of the way;greatly reduce the identification difficulty of the guidance system of urban interchange road;shorten the reaction time of driver;at the same time improve the tunnel vision environment,strengthen drivers control the speed at the ramp of import and export,guide the traffic flow reasonably,make drivers get a more accurate way,such as location,direction and distance information,change lanes timely,reduce the difficulty of traffic organization,reduce the number of traffic conflict,thereby reducing the risk of driving,and ensure the traffic capacity of driving.Using the 3ds Max software making simulation video of urban tunnel-interchanges connection sections,and using E-prime2.0 software construct psychological experiment platform for psycho physical experiments to make verify.