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Title:

Figure-Eight Hysteresis Pattern in Macroscopic Fundamental Diagrams for Urban Freeway Network in Beijing, China

Accession Number:

01476603

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

This paper presents Macroscopic Fundamental Diagrams (MFDs) for an urban freeway network in Beijing, China. In the diagrams, a figure-eight hysteresis pattern is clearly observed. To understand the causes, analyses are made ranging from spatialtemporal heterogeneity of vehicles to the flow-occupancy relation for individual locations. As a result, we observe at individual locations that free-flow traffic with the same occupancy exhibits different flows in the onset and offset of congestion; it is attributed to the figure-eight hysteresis pattern at the macroscopic level. The formation of the multi-branch flow-occupancy diagram at individual locations is discussed and explained. The paper enriches the knowledge about MFDs and provides some empirical support for the existing theory.

Supplemental Notes:

This paper was sponsored by TRB committee AHB45 Traffic Flow Theory and Characteristics.

Monograph Accession #:

01470560

Report/Paper Numbers:

13-1760

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

He, Zhengbing
He, Shuyan
Guan, Wei

Pagination:

17p

Publication Date:

2013

Conference:

Transportation Research Board 92nd Annual Meeting

Location: Washington DC, United States
Date: 2013-1-13 to 2013-1-17
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References

Uncontrolled Terms:

Fundamental diagram; Road networks

Geographic Terms:

Beijing (China)

Subject Areas:

Data and Information Technology; Highways; Operations and Traffic Management; I71: Traffic Theory; I73: Traffic Control

Source Data:

Transportation Research Board Annual Meeting 2013 Paper #13-1760

Files:

TRIS, TRB, ATRI

Created Date:

Feb 5 2013 12:25PM