摘要
基于STCA模型和公交优先权的概念,结合直线式公交停靠站附近的交通流运行特性,在优化车辆跟驰规则和换道规则的基础上,建立三车道元胞自动机车辆换道模型。运用建立的模型,分别对设置完全式公交专用道(DBL)和间歇式公交专用道(IBL)的道路交通运行情况进行局部仿真。考虑车辆换道率和公交发车频率,从基本图、时空图、平均速度和速度稳定性方面对比分析,进一步探究IBL策略的适用条件。结果表明,当车辆密度大于20 veh/km且公交车辆发车频率小于200 veh/h时,IBL策略较DBL策略效果更好。此时允许部分社会车辆进出公交专用道,虽然车辆换道率更高,但并不会对路段交通流造成负面影响,反而能提升车辆通行效率和道路资源利用率,减轻交通拥堵。
Considering the traffic flow characteristics near the on-line bus stop,a three-lane cellular automaton vehicle lane-changing model is established by optimizing car-following rules and lane-changing rules.The model is based on the STCA model and emphasizes the bus priority.Using the established model,the road traffic operation of dedicated bus lane(DBL)and intermittent bus lane(IBL)is partially simulated.In light of the lane change frequency of vehicle and the departure frequency of buses,this paper makes a comparative analysis of the fundamental diagrams,time-space evolvement,average speed and speed stability,and further explores the applicable traffic conditions of IBL strategy.The results show that when the vehicle density is greater than 20 veh/km and the departure frequency of buses is less than 200 veh/h,IBL strategy is better than DBL strategy.At this time,some social vehicles are allowed to enter and leave the bus lane.Although the lane change frequency of vehicle is higher,it has no negative impact on the traffic flow of the section.Instead,it can improve the traffic efficiency and the utilization of road resources,and ease the traffic congestion.
作者
董友邦
李锐
曹怡
陈悦新
Dong Youbang;Li Rui;Cao Yi;Chen Yuexin(College of Civil and Transportation Engineering,Hohai University,Nanjing 210024,China;Jiangsu Province Research Center for Traffic and Infrastructure Engineering Technology,Nanjing 210024,China;College of Civil Engineering and Architecture,Nantong Institute of Technology,Nantong 226002,China)
出处
《华东交通大学学报》
2020年第1期132-142,共11页
Journal of East China Jiaotong University
基金
国家自然科学基金项目（51508161）
江苏省基础研究计划（自然科学基金）项目（BK20181307）
中国博士后基金面上项目（2018M630505)
