Visual Characteristics And Simulation Of Bus Drivers At Signalized Intersections

Traffic intersection control(referred to as signal intersection)is the most important transportation hub for urban roads.And it is also a frequent location for traffic accidents and vehicle congestion.Bus drivers are the main participants in road traffic.The main way to obtain information comes from vision,and the changes in driver's visual characteristics are different under different signal changes.During the driving process,the driver's perception of the road environment information directly affects the driving safety,and the driver's perception and reaction are reflected by the changes in visual characteristics.Therefore,when the acquisition and analysis are passed under different signal changes,the change of the driver's visual characteristics is of great significance for studying how the signal light affects the driver's perception.Based on the ergonomics design of real vehicle test and virtual test,this paper uses the position coordinate method to divide the signal intersection section,and uses the eye tracker to collect the visual characteristic parameters.The combination of qualitative and quantitative methods is used to analyze the variation of visual characteristics of the characteristics of the bus at different stages when the bus passes through the intersection under different signal lights.In the virtual experiment,the virtual working condition without the preceding vehicle interference and the virtual interference working condition with the preceding vehicle interference are designed.According to the change rule of the graph line,the relationship between the visual characteristic parameters and the presence or absence of the disturbed vehicle state is analyzed,and the similarity and difference of the visual characteristics of the virtual driving and the real driving are analyzed.The results of data analysis show that the driver's visual characteristics change in the real vehicle working conditions and virtual interference working conditions.There is an influence of the preceding vehicle interference on the change of the eyelid closure degree,and the influence range of the interference vehicle is larger when the green light passes;the blinking duration is long when the green light passes under the front vehicle interference,the blink frequency is low,and the fixation time is long;the distribution position of the gaze points of each working condition before entering the intersection is within the vertical range of the line of sight;after entering the intersection,both are in the horizontal range,and the number of distribution on the left side is shorter.many.Under various working conditions,the gaze range and the number of times when the green light passes are wider and more than the red light passes.Compared with the various working conditions,the driver is aware of the surrounding environment,the preceding vehicle,and other when in the actual vehicle environment and with the preceding vehicle interference.