Research On Traffic Safety Design Of Highway Tunnel Access Zone Based On Visual Recognition Characteristics

With the steady economic and social development and the growing overall national strength,china’s highway mileage is increasing day by day,facing the western region of mountains,the construction of highway tunnel is also increasing rapidly.As the throat of road traffic,highway tunnels ensure unobstructed transportation.Due to its semi-closed tubular structure,there are still greater traffic safety risks and a high accident rate.Corresponding traffic engineering facilities must be set up to ensure the safe passage of drivers.At present,the design of the traffic engineering facilities in the tunnel entrance area mostly depends on the experience of the engineers,and few people have done in-depth research on it.Based on a large amount of literature,this paper analyzes the visual recognition characteristics of drivers,and studies the setting of the direction signs and deceleration markers in the tunnel entrance area by using UC-win/Road simulation software and indoor driving simulation platform.The main research is as follows:(1)This paper analyzes the visual recognition characteristics of drivers in the process of driving from the perspective of driver visual theory and optical illusion identification mechanism,and analyzes its influence on driving behavior.Through the collection,sorting and analysis of the literature,the design parameters of the traffic engineering facilities in the tunnel entrance area are obtained,which provides a theoretical basis for the development of this paper.(2)Choose transport facilities in the common horizontal speed hump speed hump,shark fin shape,is the comb tooth speed hump and comb tooth speed hump,the UC-win/Road simulation software for the type of tunnel close to the period of speed hump and blink rate for design of the scene,in simulated driving indoor simulated driving test platform,and through the SMI eye-movement apparatus for eye movement data collection the experimenter.According to test data,the paper analyzes the physiological and psychological characteristics of drivers,the different types and different under the blink rate of speed hump for driving around in the driveway on the driver’s pupil diameter size,the pupil diameter change rate,reduced speed rate and the relationship between the maximum deceleration,about tunnel close to the long driveway speed hump types and blink rate Settings provide powerful basis.(3)UC-win/Road simulation software was used to design the scene scheme on the cross-section of the Road,and the driving simulation test was carried out on the indoor driving simulation platform,and the data was collected from the experimenters through the reaction time measurement system.According to the test data,the response times of the exit warning signs at different positions on the road cross-section and the drivers in different lanes are obtained.According to the lane changing theory and lane changing distance of the drivers in the process of driving,the setting mode and leading distance of the direction signs in front of the tunnel entrance are obtained.(4)Combined with the characteristics of traffic engineering facilities in the entrance area of highway tunnel,the existing problems are analyzed from four aspects:traffic signs,guidance facilities,anti-collision devices and management measures,and the corresponding improvement measures are put forward.