R. Jiang, Maobin Hu, B. Jia, Ruili Wang, Qing-Song Wu
{"title":"ENHANCING HIGHWAY CAPACITY BY HOMOGENIZING TRAFFIC FLOW","authors":"R. Jiang, Maobin Hu, B. Jia, Ruili Wang, Qing-Song Wu","doi":"10.1080/18128600808685676","DOIUrl":null,"url":null,"abstract":"This paper studies the capacity of a highway with an on-ramp, using a cellular automaton (CA) model. This CA model is in the framework of three phase traffic theory and can reproduce the first order phase transition from the free flow to synchronized flow (Jiang and Wu, 2005, European Physical Journal B, 46, 581–584). It is shown when some special homogeneous boundary conditions are used, the capacity of the on-ramp system is greatly enhanced because the strong interactions of main road vehicles and on-ramp vehicles, which occur under inhomogeneous boundary conditions, are avoided. Based on this finding, we propose a new design of road section upstream of on-ramp, i.e., to split the main road into several branches and then the branches merge together. With the help of traffic light control, the inhomogeneous vehicles are homogenized. Accordingly, the capacity is enhanced.","PeriodicalId":49416,"journal":{"name":"Transportmetrica","volume":"4 1","pages":"51 - 61"},"PeriodicalIF":0.0000,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/18128600808685676","citationCount":"20","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transportmetrica","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/18128600808685676","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 20
Abstract
This paper studies the capacity of a highway with an on-ramp, using a cellular automaton (CA) model. This CA model is in the framework of three phase traffic theory and can reproduce the first order phase transition from the free flow to synchronized flow (Jiang and Wu, 2005, European Physical Journal B, 46, 581–584). It is shown when some special homogeneous boundary conditions are used, the capacity of the on-ramp system is greatly enhanced because the strong interactions of main road vehicles and on-ramp vehicles, which occur under inhomogeneous boundary conditions, are avoided. Based on this finding, we propose a new design of road section upstream of on-ramp, i.e., to split the main road into several branches and then the branches merge together. With the help of traffic light control, the inhomogeneous vehicles are homogenized. Accordingly, the capacity is enhanced.
本文采用元胞自动机(CA)模型研究了具有入口匝道的高速公路的通行能力。该CA模型在三相交通理论的框架内，可以再现从自由流到同步流的一阶相变(Jiang and Wu, 2005, European Physical Journal, 46, 581-584)。结果表明，采用特定的均匀边界条件，可以避免非均匀边界条件下主路车辆与匝道车辆之间的强相互作用，从而大大提高匝道系统的通行能力。基于这一发现，我们提出了一种新的入口匝道上游路段设计方法，即将主干道分成若干分支，然后将分支合并在一起。借助交通灯控制，对非均匀车辆进行均匀化处理。因此，能力得到了提高。
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
