摘要
为明确智能网联车辆(CAVs)对快速路交织衔接区异质交通流的影响,提出考虑CAVs车辆功能退化和编队行为的异质交通流元胞自动机模型。首先,考虑车辆功能退化界定3种跟驰模式并结合CAVs编队行为建立异质交通流元胞自动机车辆跟驰规则。其次,依据不同区域的车辆驾驶行为划分换道区段并制定换道规则。最后,通过数值仿真不同CAVs渗透率下的异质交通流基本图、交通拥堵和敏感性分析。研究表明:CAVs的混入能够显著提升道路通行能力,提高交通效率和缓解拥堵,尤其是入口匝道处的合流拥堵;CAVs编队行为会进一步提高道路通行能力,在进车概率为0.8时最优CAVs车队规模为6辆,但具体的最优规模还需考虑CAVs渗透率和道路状况。
To clarify the influence of intelligent connected vehicles(CAVs)on heterogeneous traffic flow in the interwoven convergence area of the expressway,a cellular automaton model of heterogeneous traffic flow considering the functional degradation and formation behavior of CAVs vehicles is proposed.Firstly,consider the three follow-up modes of vehicle functional degradation and combine the behavior of CAVs formations to establish heterogeneous traffic flow cellular automata vehicle follow-up rules.Secondly,according to the driving behavior of vehicles in different areas,the lane-changing sections are divided and the lane-changing rules are formulated.Finally,the basic diagram of heterogeneous traffic flow,traffic congestion and sensitivity analysis under different CAVs permeability are numerically simulated.Studies have shown that the mixing of CAVs can significantly improve road traffic capacity,improve traffic efficiency and relieve congestion,especially the confluence congestion at the entrance ramp;CAVs formation behavior will further improve road traffic capacity,when the probability of entering the car is 0.8,the optimal CAVs fleet size is 6 vehicles,but the specific optimal size still needs to consider the CAVs penetration rate and road conditions.
作者
安胜康
曾俊伟
钱勇生
魏谞
AN Shengkang;ZENG Junwei;QIAN Yongsheng;WEI Xu(School of Traffic and Transportation,Lanzhou Jiaotong University,Lanzhou 730070,China)
出处
《交通科技与经济》
2025年第4期58-65,共8页
Technology & Economy in Areas of Communications
基金
国家自然科学基金项目(52362047)。
关键词
交通工程
异质交通流
元胞自动机模型
交织衔接区
快速路
traffic engineering
heterogeneous traffic flow
cellular automata
intertwined convergence zone
expressway
