详情

原文传递 A Modification of Local Path Marginal Coston the Dynamic Traffic Network

题名：	A Modification of Local Path Marginal Coston the Dynamic Traffic Network
正文语种：	中文
作者：	Huang Zhengfeng Ren Gang Cheng Yang Lu Lili
作者单位：	School of Transportation,Southeast University,Nanjing 210096, hina epartment of ivil and Environmental Engineering,University of Wisconsin,Madison,WI 53705,U.S.
关键词：	Transportation network Path marginal cost Cumulative flow curve Dynamic traffic System optimization
摘要：	Path marginal cost (PMC) is the change in total travel cost for flow on the network that arises when time-dependent path flow changes by one unit.Because it is hard to obtain the marginal cost on all the links, the local PMC, considering marginal cost of partial links, is normally calculated to approximate the global PMC.When analyzing the marginal cost at a congested diverge intersection,a jump-point phenomenon may occur.It manifests as a likelihood that a vehicle may unsteadily lift up (down) in the cumulative flow curve of the downstream links.Previously, the jump-point caused delay was ignored when calculating the local PMC.This article proposes an analytical method to solve this delay which can contribute to obtaining a more accurate local PMC.Next to that, use a simple case to calculate the previously local PMC and the modified one.The test shows a large gap between them, which means that this delay should not be omitted in the local PMC calculation.
会议日期：	20131019
会议举办地点：	成都
会议名称：	2013年全国博士生学术论坛——交通运输工程领域拔尖创新人才博士生学术论坛
出版日期：	2013-10-19
母体文献：	2013年全国博士生学术论坛——交通运输工程领域拔尖创新人才博士生学术论坛论文集