Driving distraction of cooperative vehicle infrastructure system in freeway work zone based on driver’s visual characteristics

doi:10.3969/j.issn.1674-8484.2020.04.009

Abstract

Abstract:

A Cooperative Vehicle Infrastructure System (CVIS) simulation test platform was built based on driving simulation technology and conducted experiments to clarify the visual distraction effect of the CVIS, and to improve the safety application level of CVIS in the scene of freeway work zone. An index system was constructed from two levels of fixation allocation and distraction degree. Paired sample T-test and nonparametric test were used to compare the differences between with and without CVIS of each index. After using the vehicle terminal Human-Machine Interface (HMI), the ratios of time and frequency of fixation on the road ahead significantly dropped, while the distraction index and unit distraction index significantly increased. The results show that the HMI of CVIS occupies the driver's visual resources and is prone to cause distraction. Therefore, carrying out the CVIS safety assessment and HMI design optimization is necessary.

Key words: cooperative vehicle infrastructure system (CVIS), freeway work zone, human-machine interface (HMI), driving simulation, visual characteristics, driving distraction

CLC Number:

U491.2+5

YANG Jiaxia, LI Xuewei, ZHAO Xiaohua, FENG Xiaofan. Driving distraction of cooperative vehicle infrastructure system in freeway work zone based on driver’s visual characteristics[J]. Journal of Automotive Safety and Energy, 2020, 11(4): 493-502.

Figures/Tables 12

References 27

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检验指标	平均值	标准差	标准误差平均值	差值95%置信区间		T	自由度	显著性(双尾)
检验指标	平均值	标准差	标准误差平均值	下限	上限	T	自由度	显著性(双尾)
注视频率	0.091 3	0.338 1	0.061 7	-0.034 9	0.217 6	1.479	29	0.150
瞳孔面积	-0.328 8	1.533 6	0.280 0	-0.901 3	0.244 0	-1.174	29	0.250
前方道路注视时间比例	-0.720 0	0.068 7	0.012 5	-0.097 7	-0.046 4	-5.740	29	0.000***
前方道路注视次数比	-0.087 3	0.074 7	0.013 6	-1.152 0	-0.594 1	-6.400	29	0.000***

检验指标	平均值	标准差	标准误差平均值	差值95%置信区间		T	自由度	显著性(双尾)
检验指标	平均值	标准差	标准误差平均值	下限	上限	T	自由度	显著性(双尾)
注视频率	0.091 3	0.338 1	0.061 7	-0.034 9	0.217 6	1.479	29	0.150
瞳孔面积	-0.328 8	1.533 6	0.280 0	-0.901 3	0.244 0	-1.174	29	0.250
前方道路注视时间比例	-0.720 0	0.068 7	0.012 5	-0.097 7	-0.046 4	-5.740	29	0.000***
前方道路注视次数比	-0.087 3	0.074 7	0.013 6	-1.152 0	-0.594 1	-6.400	29	0.000***

检验指标	Z	渐进显著性(双尾)
分心指数	-3.774^**	0.000***
单位分心指数	-3.271^**	0.001***

检验指标	Z	渐进显著性(双尾)
分心指数	-3.774^**	0.000***
单位分心指数	-3.271^**	0.001***