The impact of incidents on macroscopic fundamental diagram

Ji, Yangbeibei, Jiang, Rui, Chung, Edward, & Zhang, Xiaoning (2013) The impact of incidents on macroscopic fundamental diagram. [Working Paper] (Unpublished)

[img] Submitted Version (PDF 1MB)
Available to QUT staff and students only | Request a copy from author


Macroscopic Fundamental Diagram (MFD) has been proved to exist in large urban road and freeway networks by theoretic method and real data in cities. However hysteresis and scatters have also been found existed both on motorway network and urban road. This paper investigates how the incident variables affect the scatter and shape of the MFD using both the simulated data and the real data collected from the Pacific Motorway M3 in Brisbane, Australia. Three key components of incident are investigated based on the simulated data: incident location, incident duration time and traffic demand. Results based on the simulated data indicate that MFD shape is a property not only of the network itself but also of the incident characteristics variables. MFDs for three types of real incidents (crash, hazard and breakdown) are explored separately. The results based on the empirical data are consistent with the simulated results. The hysteresis phenomenon occurs on both the upstream and the downstream of the incident location, but for opposite hysteresis loops. Gradient of the MFD for the upstream is more than that for the downstream on the incident site, when traffic demand is off peak.

Impact and interest:

1 citations in Web of Science®
Search Google Scholar™

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

ID Code: 63798
Item Type: Working Paper
Refereed: Yes
Additional Information: submitted to Proceedings of the ICE - Transport [published by Thomas Telford ] for publication
Keywords: Traffic Engineering, Macroscopic Fundamental Diagram, Traffic Incident, Simulation Model, Motorway Network
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Current > Research Centres > Smart Transport Research Centre
Copyright Owner: Copyright 2013 The Author(s)
Deposited On: 29 Oct 2013 22:57
Last Modified: 31 Oct 2013 00:52

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page