Comprehensive risk evaluation of interchange ramp area traffic based on real vehicle driving data

doi:10.16265/j.cnki.issn1003-3033.2025.08.0852

Abstract

Abstract:

In order to evaluate comprehensive driving risk in interchange ramp areas, a real-vehicle test was conducted on Chongqing interchange groups, focusing on three typical ramps: right-turn directional, left-turn semi-directional, and small-radius loop ramps. Drivers' electrocardiographic data and vehicle operation status were collected by PhysioLAB and Speedbox, respectively, when passing through ramps. Psychological load and vehicle operation risks of the three ramps were analyzed, and an improved entropy-weighted Technique for Order Preference by Similarity to an Ideal Solution(TOPSIS)method was used to construct and evaluate a comprehensive driving risk model. Results show four HRI change patterns: convex curve, continuous increase, continuous decrease and concave curve. Heart Rate Increase (HRI) in right-turn directional ramps first decreases, then increases, in left-turn semi-directional ramps, it first increases, then decreases near diverging/merging points, in small-radius loop ramps, it fluctuates significantly there. Vehicle operation risk is highest in ramp sections, increasing with smaller radii. The level of vehicle operation risk is small-radius loop ramp greater than left-turn semi-directional ramp, greater than right-turn directional ramp. Comprehensive driving risk peaks in ramp sections, widely distributed in split/confluence areas and peaking shortly after diversion points.

Key words: real vehicle driving data, interchange, ramp area, comprehensive risk evaluation, mental load, vehicle operational risk

CLC Number:

X951交通运输安全

ZHANG Yue, ZHANG Shi, DUAN Weijian, ZHU Xinglin, XU Jin. Comprehensive risk evaluation of interchange ramp area traffic based on real vehicle driving data[J]. China Safety Science Journal, 2025, 35(8): 219-226.

Figures/Tables 13

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立交名称	立交型式	立交类型	匝道形式	编号	匝道限速/ (km·h^-1)	匝道车道数
白杨沟立交	变形苜蓿叶形 (对称双环式)	枢纽互通	右转定向式匝道	BY	40	2
白杨沟立交	变形苜蓿叶形 (对称双环式)	枢纽互通	左转半定向式匝道	BZ	40	2
石港立交	变形苜蓿叶形 (单环式)	一般互通	右转定向式匝道	SY	40	2
石港立交	变形苜蓿叶形 (单环式)	一般互通	左转半定向式匝道	SZ	40	2
腾龙立交	变形苜蓿叶形 (单环式)	一般互通	右转定向式匝道	TY	40	2
腾龙立交	变形苜蓿叶形 (单环式)	一般互通	左转半定向式匝道	TZ	40	2
东环立交	完全苜蓿叶形	枢纽互通	小半径环圈式匝道	DX1	30	2
东环立交	完全苜蓿叶形	枢纽互通	小半径环圈式匝道	DX2	30	2
何家梁立交	完全苜蓿叶形	一般互通	小半径环圈式匝道	HX1	30	2
何家梁立交	完全苜蓿叶形	一般互通	小半径环圈式匝道	HX2	30	2

匝道形式	平均值	15^th	85^th	最小值	最大值
右转定向式匝道	16.41	14.17	18.30	12.68	20.12
左转半定向式匝道	16.44	13.78	20.32	12.42	22.26
小半径环圈式匝道	16.66	15.13	18.64	13.90	20.04

行为指标	信息量	权重/%
速度平均值	1.049	26.91
区间车速差	0.488	12.52
纵向加速度	0.907	23.27
横向加速度	1.04	26.69
速度标准差	0.413	10.60

项	正理想解距离d⁺	负理想解距离d^-	综合风险值C	排序结果
路段单元1	0.455	0.255	0.360	199
路段单元2	0.434	0.274	0.387	153
路段单元3	0.431	0.277	0.391	142
︙	︙	︙	︙	︙
路段单元390	0.557	0.156	0.219	363
路段单元391	0.587	0.168	0.222	359

项目	聚类中心
项目	1 高风险	2 较高风险	3 低风险
驾驶综合风险值	0.426	0.408	0.34
驾驶综合风险值C	>0.416	0.375≤C≤0.416	<0.375
所占比例/%	23	29	48