Research On The Driving Behavior Characteristics Of Coastal Highway Based On Real Car Driving Test

With the rapid development of coastal social economy and the rise of tourism,coastal highways have become the main components of China’s eastern coastal road network.The coastal highways are narrow and linear changeable.In addition,with tourism,the composition of drivers is complex,and the annual traffic accidents bring huge losses to society.In the coastal highway environment,drivers are prone to perception,judgment,and operation errors,resulting in a relatively high proportion of traffic accidents.Based on this,it studies the driving behavior characteristics of drivers in the coastal highway,and analyzes the changing law of drivers’ driving speed and physiological characteristics under different linear shapes,which can provide data basis and decision support for the prevention and control of traffic accidents caused by drivers.Based on the research status of the main factors(people,cars,roads,environment)affecting traffic safety,vehicle speed characteristics,and driver behavior characteristics(psychophysiological characteristics,visual characteristics)at home and abroad,this thesis summarizes the shortcomings of coastal highway driving behavior characteristics and traffic safety research.The speed is selected as the vehicle operation index;the heart rate change rate,heart rate variability(HRV),skin electricity,and myoelectricity are selected as psychophysiological indicators;the pupil area change rate,the number of fixations,fixations duration,the number of saccades and the saccades range are the visual characteristic indicators.Taking Qingdao Jiulongshan Road(S399)as the test section,25 drivers were recruited for the real vehicle test.Tuqiang GSM wireless data terminal,Ergo Lab multi-functional physiological signal detector,and Tobii Pro Glasses 2 eye tracker were used to collect driving behavior characteristic data.The data were analyzed by Python software.The driving behavior characteristics of drivers in coastal highway environment are studied.Taking the monotonous landscape environment,non-monotonic landscape environm-ent,and flat curve section of the straight section as the object,the change law of vehicle speed characteristics,driver’s physiological characteristics,and visual characteristics in different linear shapes and landscape environments is studied.The edge rate is used to a nalyze the difference between the driver’s perceived speed and actual speed in the monot onic and non-monotonic linear landscape environment.The velocity characteristics of th e starting point,midpoint and end point of the curve are analyzed for the typical flat curv e segments R=300 m and R=600 m,and a driving speed prediction model for different p ositions of the curve and carry out speed consistency verification.Analyzing the psycho physiological characteristics of the driver,heart rate index,electrodermal index and elec tromyography index were used to analyze the environment of two linear segments and ty pical flat curve segments R=300 m and R=600 m,and fitting model of heart rate change with driving time in a monotonous landscape environment and a fitting model of heart ra te change with different curve positions were established respectively.Analyzing the vis ual characteristics of the driver,select R=300 m and R=600 m in typical flat curve sectio ns,and use pupil change index,fixation index,and saccade index to analyze the straight section of monotonous landscape environment into driver interest(AOI)region by K-M clustering,and construct a fitting model considering the change rate of pupil area,fixatio n duration and saccade amplitude at different curve locations.For the comprehensive evaluation of the driving load on the coastal road,the entropy weight method was used to select the pupil area change rate,heart rate change rate,fixation duration,saccade amplitude and speed as comprehensive evaluation indexes.After standardized processing,and calculation of information entropy and information weight,the driving load evaluation system of drivers on the coastal road was established.To comprehensively evaluate the driving load on Jiulongshan Road(S399)and put forward suggestions for improvement.Set up relevant prompts for curves of different radii as far as possible,so that drivers can clarify turning requirements and turning information and for straight sections of monotonous environmental sections,the complexity of surrounding vegetation can be increased or stimuli can be reasonably installed on both sides of the road,so that drivers are less likely to be fatigued.