首页|自然驾驶状态下城市地下环道驾驶人心理负荷研究

自然驾驶状态下城市地下环道驾驶人心理负荷研究

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为探究城市地下环道驾驶人心理负荷特性,组织驾驶人自然驾驶试验,使用生理仪获取自然驾驶状态下驾驶人心电信号数据.以驾驶人心率、心率增长率和心率变异性指标为关键变量,基于因子分析法构建心理负荷量化模型,揭示地下环道平曲线半径、曲线类型、出入口以及熟练程度对驾驶人心理负荷的影响.研究表明:心率指标和心率变异性指标分别与地下环道平曲线半径呈负相关和正相关关系;驾驶人心理负荷与平曲线半径呈负相关,在相同半径条件下,连续曲线场景下的心理负荷显著高于单个曲线场景,且连续曲线间负荷累积作用超过单一曲线半径对驾驶人心理负荷的影响;入口段驾驶人心理负荷比出口段高21.39%;非熟练驾驶人心理负荷比熟练驾驶人高30.75%;建议在城市地下环道出入口和曲率变化区段增设视线诱导设施,设计车速为20～40 km·h-1时,平曲线半径不宜小于30 m.
Mental Workload of Drivers in Urban Underground Ring Roads Under Naturalistic Driving Conditions
To explore the mental workload characteristics of drivers on urban underground ring roads,a natural driving test was conducted,and physiological instruments were used to obtain drivers'electrocardiogram data in their natural driving state.A quantitative model of mental workload was constructed based on the factor analysis,using drivers'heart rate,heart rate growth rate,and heart rate variability indicators as key variables,to reveal the effects of underground ring road flat curve radius,the curve type,entrance and exit,and the proficiency level on drivers'mental workload.Results show that heart rate index and heart rate variability index are negatively and positively correlated with the radius of the underground ring road flat curve,respectively.The mental workload of drivers is negatively correlated with the radius of the flat curve.Under the same radius conditions,the mental workload of consecutive curve scenes is significantly higher than that of single curve scenes.Furthermore,the cumulative effect of consecutive curves exceeds that of single curve radius on drivers'mental workload.The mental workload of drivers at the entrance segment is 21.39%higher than that at the exit segment.The mental workload of non-proficient drivers is 30.75%higher than that of proficient drivers.It is recommended that sight-inducing facilities be added at the entrances and exits of urban underground ring roads and sections with curvature changes,and the flat curve radius should not be less than 30 m when the design speed is 20～40 km·h-1.

traffic engineeringdrivers'mental workloadfactor analysisurban underground ring roadsheart rate variabilitynatural driving test

尚婷、易爱强、何军、刘祥

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重庆交通大学,交通运输学院,重庆 400074

重庆交通大学,智能综合立体交通重庆市重点实验室,重庆 400074

重庆市气象服务中心,重庆 401147

交通工程 驾驶人心理负荷 因子分析 城市地下环道 心率变异性 自然驾驶试验

重庆市技术创新与应用发展专项重点项目重庆市自然科学基金重庆市研究生科研创新项目

CSTB2022TIAD-KPX0123CSTB2023NSCQ-MSX0742CYS240477

2024

10.16097/j.cnki.1009-6744.2024.04.026

交通运输系统工程与信息
中国系统工程学会

交通运输系统工程与信息

CSTPCD北大核心
影响因子：0.664
ISSN：1009-6744
年,卷(期)：2024.24(4)