Simulation-Based Dynamic Traffic Assignment Model for Mixed Traffic Flows

Traffic assignment distributes Origin-Destination (OD) trips in a network, and determines the flow patterns in a traffic network. This research aims at developing simulation-based algorithm for dynamic traffic assignment problems under mixed traffic flow considerations. Four different physical vehicle types are explicitly considered and modeled, including car, bus, motorcycle, and truck. Four different behavioral rules, pre-specified-path driver, user-equilibrium driver, system-optimization driver, and real-time information driver, are considered in the solution procedure. The DTA algorithm consists of an inner loop that incorporates a direction finding mechanism for the search process for System Optimization (SO) and User Equilibrium (UE) classes based on the simulation results of the current iteration, including experienced vehicular trip times and marginal trip times. In order to understand tripmaker acceptance toward route guidance, a survey is conducted to explore possible behavioral classifications and associated percentages. Numerical experiments are conducted in a test network to illustrate the capabilities of the simulation-based DTA procedures, and to observe how system performs under multiple user classes conditions, including multiple user behavior rules and multiple physical vehicle classes.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Hu, Ta-Yin
  • Tong, Chee-Chung
  • Liao, Tsai-Yun
  • Chen, Li-Wen
• Conference:
  • Transportation Research Board 87th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2008-1-13 to 2008-1-17
• Date: 2008

Language

• English

Media Info

• Media Type: DVD
• Features: Figures; References; Tables;
• Pagination: 22p
• Monograph Title: TRB 87th Annual Meeting Compendium of Papers DVD

Subject/Index Terms

• TRT Terms: Driver information systems; Dynamic traffic assignment; Operations; Real time information; Route guidance; Traffic assignment; Traffic congestion; Traffic flow; Traffic simulation
• Uncontrolled Terms: User equilibrium
• Subject Areas: Administration and Management; Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01099172
• Record Type: Publication
• Report/Paper Numbers: 08-2096
• Files: TRIS, TRB
• Created Date: May 21 2008 7:05AM