Assessing Network Vulnerability Using A Combined Travel Demand Model

Transportation networks are important in providing accessibility and promoting the safe and efficient movement of people and goods. Yet they are so fragile and vulnerability to disruptions. Analyzing and understanding vulnerability to disruptions in transportation networks is hence an important topic. In this paper, we develop network-based accessibility measures using a combined travel demand model for assessing vulnerability of degradable transportation networks. The combined travel demand model is formulated as a variational inequality problem to model different travel behavioral responses of network users when the network is disrupted. Utility-based accessibility measures derived from the combined travel demand model are used to assess network vulnerability at different spatial levels. The results indicate that the accessibility measures proposed in this paper are capable of measuring the consequences of both demand and supply changes in the network and have the flexibility to reflect the effects of different travel choice dimensions on the network vulnerability.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Chen, Anthony
  • Kongsomsaksakul, Sirisak
  • Zhou, Zhong
• Conference:
  • Transportation Research Board 86th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2007-1-21 to 2007-1-25
• Date: 2007

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; References; Tables;
• Pagination: 19p
• Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

• TRT Terms: Accessibility; Public transit; Risk assessment; Transit operating agencies; Transportation planning; Travel demand; Travel demand management; Travel surveys; Utility theory; Variational inequalities
• Uncontrolled Terms: Transportation networks
• Subject Areas: Economics; Highways; Planning and Forecasting; Public Transportation; Safety and Human Factors; Society; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01047482
• Record Type: Publication
• Report/Paper Numbers: 07-2559
• Files: TRIS, TRB
• Created Date: May 2 2007 1:01PM