Research on safety slope of mountain third-level highway in mountainous area based on heart rate index

doi:10.16265/j.cnki.issn1003-3033.2017.09.015

Abstract

Abstract: For the sake of studying drivers' heart rate as a function of both longitudinal slope of highway in mountainous area and the velocity of vehicle, field experiments were carried out with 26 drivers selected randomly. In the experiments, a dynamic tractor was used to collect the data on drivers' heart rate, and GPS was used to collect the data on real-time operational speed. Through partial correlation analysis, the main factors influencing drivers' heart rate were identified, and two models were built, one for the relationship between drivers' heart growth rate and longitudinal slope, and the other for the relationship between the rate and the velocity. The analysis results show that there is a positive correlation between the drivers' heart growth rate and both the slope and the velocity. On the basis of drivers' comfort and safety, it is suggested that the maximum safety longitudinal slope in the uphill direction should not exceed 6.8% for a third-level highway with two lanes in a mountainous area.

Key words: driver, mountainous highway, safety slope, velocity, heart growth rate

CLC Number:

X913.4

ZHANG Juan, ZHU Wenqiang, LIU Haoxue, ZHU Wenbang. Research on safety slope of mountain third-level highway in mountainous area based on heart rate index[J]. China Safety Science Journal, 2017, 27(9): 86-91.

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