断面车路通讯环境下的恒速车流运行模型  

Constant Speed Based Traffic Platoon Dispersion Model in Cross-Sectional Vehicle Infrastructure Communication Environment

作　　者：沈旅欧[1,2] 姚志洪[1,2] 马万经[3] 盛东雪 

机构地区：[1]西南交通大学交通运输与物流学院,四川成都610031 [2]西南交通大学综合交通运输智能化国家地方联合工程实验室,四川成都610031 [3]同济大学交通运输工程学院,上海201804

出　　处：《同济大学学报（自然科学版）》2017年第6期847-853,共7页Journal of Tongji University:Natural Science

基　　金：2015年国家大学生创新创业训练计划(201510613045);2016省级创新训练项目(2016152)

摘　　要：从流量角度,在假设车速恒定的基础上建立了车流运行模型,并以该模型预测和实际到达的流量分布之间的最大流量区间变异系数为评价指标,分析了路段上游数据收集断面位置、路段长度、交通流量和不同转向车流对预测效果的影响.与静态匀速模型的对比分析结果表明:数据收集断面位置和路段长度对模型的预测效果影响很小,且不同交通流量和转向车流情况下模型预测存在一定规律性.最后结合实际调查数据,证实了模型的有效性.Assuming that the car＇s speed is constant along the road segment, the traffic platoon dispersion model was developed-from the perspective of flow. The parameter of peak range of variation coefficient of the predicted and actual arriving traffic flow distribution was chosen for model evaluation. Besides, the influence of data collector location, link segment length, traffic volume and flow direction on the predicted results was analyzed. Comparing with the static average speed model, ＂the results show that the data collector location and the link segment length have a trivial effect on the prediction model. The trend of the model performance was summarized for different volume levels and different flow directions. It can be concluded that the proposed model is effective and available for predicting the distribution of traffic flow arriving at downstream intersection based on the simulation experiment and field investigation.

关 键 词：智能交通 车路通讯 前馈控制 变异系数 车流运行模型 

分 类 号：U491.5[交通运输工程—交通运输规划与管理]