交通运输工程与信息学报2026，Vol.24Issue(3)：16-25,10.DOI:10.19961/j.cnki.1672-4747.2025.06.040
车联网环境下高速公路分流区车流建模及分析
Modeling and analysis of traffic flow safety in highway diverging zones within connected and autonomous environment
摘要
Abstract
[Background]Diverging zones are critical components of highway systems and act as traffic bottlenecks that significantly affect the overall safety and capacity of highway networks.[Ob-jective]To examine the safety characteristics of traffic flows in diverging highway zones,a heteroge-neous traffic flow model was developed that incorporates driver heterogeneity and driving intentions within a connected and autonomous environment.[Method]First,the characteristics of heteroge-neous traffic flow in diverging zones of highways were analyzed to model the behaviors of various vehicle types.Driver heterogeneity was factored in to accurately calibrate these behavioral models.Next,the composition of the heterogeneous traffic flow was examined,accounting for variations in driver behavior and intentions,to construct a comprehensive heterogeneous traffic flow model.Final-ly,simulation experiments were conducted using the time exposed to collision,time-integrated time to collision,and time-exposed modified time to collision as evaluation metrics.These experiments analyzed the impact of intelligent connected vehicle(ICV)penetration rates,driver heterogeneity,and diverging ratios on the heterogeneous traffic safety of the diverging zone of highways.[Conclu-sion]The results indicate that a high penetration rate of ICVs in highway diverging zones significant-ly improves heterogeneous traffic safety,although the extent of this improvement is limited during periods of heavy traffic.A greater proportion of aggressive human-driven vehicles may,to some ex-tent,contribute to improved heterogeneous traffic safety within the diverging zone at higher vehicle speeds.Additionally,a lower diverging ratio positively influences the heterogeneous traffic safety en-hancement in these areas.[Application]This study provides theoretical support for the research and analysis of highway traffic safety in connected and autonomous environments and offers a scientific basis for the management of highway diverging zones by traffic management departments.关键词
智能交通/交通安全/异质交通流/高速公路分流区/智能网联车辆Key words
intelligent transportation/traffic safety/heterogeneous traffic flow/diverging zone of highway/intelligent connected vehicle分类
交通工程引用本文复制引用
张健,张志顺,徐婷,赖心荷,季航旭..车联网环境下高速公路分流区车流建模及分析[J].交通运输工程与信息学报,2026,24(3):16-25,10.基金项目
国家自然科学基金项目(52002033) （52002033）
陕西省自然科学基础研究计划面上项目(2025JC-YBMS-538) （2025JC-YBMS-538）
中央高校基本科研业务费专项资金项目(300102343205) （300102343205）
