原文传递
Specifications of Fundamental Diagrams for Dynamic Traffic Modeling
| 题名： | Specifications of Fundamental Diagrams for Dynamic Traffic Modeling |
| 其他题名： | Ben-Tal,A.,and Nemirovski,A.(1999)."Robust solutions of uncertain linear programs."Oper.Res.Lett.,25(1),1-13. |
| 正文语种： | 英文 |
| 作者： | Andy H. F. Chow |
| 关键词： | Motorway Incident Detection and Automatic Signalling (MIDAS);Quantile regression;Data granularity;Set-valued fundamental diagrams;Robust control |
| 摘要： | This paper studies different specifications of fundamental diagrams for first-order dynamic traffic modeling. The fundamental diagram, which refers to the relationship between traffic flow and density at a given location, plays an important role in modeling the dynamics of traffic propagation. Many forms of fundamental diagrams have been proposed since the seminal work of Greenshields 80 years ago. Nevertheless, empirical validation of fundamental diagrams, in particular, for dynamic modeling purposes, is limited. The study is conducted with an extensive dataset collected from the U.K. M25 motorway. This paper highlights the difficulty in modeling congested traffic with single-valued fundamental diagrams and fine-grained loop detector data. Consequently, this paper first analyzes and discusses the effect of data granularity on model calibration and application. Following this, a set-valued fundamental diagram modeling approach with fine-grained data is also presented. This paper contributes to the development and validation of dynamic traffic simulation tools. |
| 出版年： | 2015 |
| 论文唯一标识： | P-72Y2015V141N09002 |
| 英文栏目名称： | Technical Papers |
| doi： | 10.1061/(ASCE)TE.1943-5436.0000781 |
| 期刊名称： | Journal of Transportation Engineering |
| 拼音刊名(出版物代码)： | P-72 |
| 卷： | 141 |
| 期： | 09 |
| 页码： | 1-11 |
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