A traffic fundamental diagram calibrating methodology to avoid unbalanced speed–density observations

doi:10.3846/transport.2021.14302

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	A traffic fundamental diagram calibrating methodology to avoid unbalanced speed–density observations
	Zhang, Chunbo 1; Huang, Zhaoguo 2; Wang, Yonggang 3
刊名	Transport
	2021-02-24
卷号	36 期号:1 页码:13-24
关键词	Speed Data sample Fundamental diagram Least square methods Traffic capacity Traffic flow
ISSN号	1648-4142
DOI	10.3846/transport.2021.14302
英文摘要	Traffic fundamental diagram is extremely important to analyse traffic flow and traffic capacity, and the central part of traffic fundamental diagram is to calibrate speed–density relationship. However, because of unbalanced speed–density observations, calibrating results using Least Square Method (LSM) with all speed–density points always lead to inaccurate effect, so this paper proposed a selecting data sample method and then LSM was used to calibrate four well-known single-regime models. Comparisons were made among the results using LSM with all speed–density points and the selecting data sample. Results indicated that the selecting data sample method proposed by this paper can calibrate the single-regime models well, and the method overcomes the inaccurate effect caused by unbalanced speed–density observations. Data from different highways validated the results. The contribution of this paper is that the proposed method can help researchers to determine more precise traffic fundamental diagram. © 2021 The Author(s). Published by Vilnius Gediminas Technical University.
WOS研究方向	Transportation
语种	英语
出版者	VGTU
WOS记录号	WOS:000621921700002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/147734]
专题	土木工程学院
作者单位	1.School of Traffic and Transportation, Shijiazhuang Tiedao University, Shijiazhuang, China; 2.School of Civil Engineering, Lanzhou University of Technology, Lanzhou, China; 3.College of Transportation Engineering, Chang’an University, Xi’an, China
推荐引用方式 GB/T 7714	Zhang, Chunbo,Huang, Zhaoguo,Wang, Yonggang. A traffic fundamental diagram calibrating methodology to avoid unbalanced speed–density observations[J]. Transport,2021,36(1):13-24.
APA	Zhang, Chunbo,Huang, Zhaoguo,&Wang, Yonggang.(2021).A traffic fundamental diagram calibrating methodology to avoid unbalanced speed–density observations.Transport,36(1),13-24.
MLA	Zhang, Chunbo,et al."A traffic fundamental diagram calibrating methodology to avoid unbalanced speed–density observations".Transport 36.1(2021):13-24.