Effects of the Spatial Structure Conditions of Urban Underpass Tunnels’ Longitudinal Section on Drivers’ Physiological and Behavioral Comfort

Zhongxiang Feng, Miaomiao Yang, Yingjie Du, Jin Xu, Congjun Huang and Xu Jiang
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Zhongxiang Feng: School of Transportation, Southeast University, Nanjing 210096, China
Miaomiao Yang: School of Transportation, Southeast University, Nanjing 210096, China
Yingjie Du: School of Automobile and Traffic Engineering, Hefei University of Technology, Hefei 230009, China
Jin Xu: College of Traffic and Transportation, Chongqing Jiaotong University, Chongqing 400074, China
Congjun Huang: Hefei Urban Planning and Design Institute, Hefei 230009, China
Xu Jiang: Hefei Urban Planning and Design Institute, Hefei 230009, China

IJERPH, 2021, vol. 18, issue 20, 1-20

Abstract: To investigate the physiological and behavioral comfort of drivers traversing urban underpass tunnels with various spatial structure conditions, a driving simulator experiment was conducted using 3DMAX and SCANeRTM studio software. Three parameters, including the slope, slope length, and height of a tunnel, were selected as research objects to explore the optimal combination of structural parameters in urban underpass tunnels. The heart rate (HR), interbeat (RR) interval, speed, and lane centerline offset value were collected for 30 drivers. Then, a measurement model of the relationship among HR, RR interval, speed, lane centerline offset value, and structural parameters was established by using partial correlation analyses and the stepwise regression method. On this basis, a structural constraint model based on the drivers’ physiological and behavioral comfort thresholds was also constructed. The results show that the driver’s HR, RR interval, speed, and lane centerline offsets are significantly related to the tunnel height, slope, and slope length. More importantly, this paper not only analyzed the effects of various structural parameters on drivers’ physiology and behavior but also proposed an optimized combination of structural parameters based on drivers’ physiological and behavioral comfort. It can reasonably improve tunnel design in China, ensure tunnel traffic safety, and seek the maximum comfort of the driver in the driving process.

Keywords: traffic safety; urban underpass tunnel; driving simulator experiment; physiological characteristics; tunnel height; slope; slope length (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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