Practical Approach to Estimation of Time-Varying Origin-Destination Demands Incorporating Floating-Car Data and Remote Traffic Microwave Sensor Data

Time-varying Origin-Destination (OD) demands are the essential element in the modeling and evaluation of advanced traffic management and control strategies for a large traffic network with queues. Although extensive efforts have been made to develop time-varying synthetic OD demands, few existing models are capable of matching the modeled time-varying demands with the field observed demands at a level of accuracy sufficient for real-world applications. This paper is intended to develop a practical approach to estimating time-varying OD demands incorporating both floating car data (FCD) and remote traffic microwave sensors (RTMS) data. The paper proposes a framework of the methodology based on a detailed analysis of the characteristics of FCD and RTMS data. In this framework, the RTMS data are used to obtain the controlling static OD demands for the entire modeling period to ensure that the total modeled demands match the total observed demands. Then, an approach is developed to obtain time-varying splitting rates by a combined application of FCD and RTMS data. The approach is designed in a way that takes full advantage of FCD, which provide some unique features that none of other sources of data could provide. The resulting time-varying splitting rates are subsequently applied to the controlling static OD demands to ultimately derive the time-varying OD demands. The paper applies the proposed methodology to derive the time-varying OD demands for the Western 3rd Ring-Road corridor network, which is shown to be both accurate and practical.

• Supplemental Notes:
  • This paper was sponsored by TRB committee ADB30 Transportation Network Modeling
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Zhao, Hui
  • Yu, Lei
  • Zhao, Nale
  • Wen, Huimin
  • Guo, Jifu
  • Zhu, Lin
• Conference:
  • Transportation Research Board 91st Annual Meeting
  • Location: Washington DC, United States
  • Date: 2012-1-22 to 2012-1-26
• Date: 2012

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: 19p
• Monograph Title: TRB 91st Annual Meeting Compendium of Papers DVD

Subject/Index Terms

• TRT Terms: Floating car data; Methodology; Origin and destination; Remote sensing; Time; Traffic models
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; I71: Traffic Theory;

Filing Info

• Accession Number: 01368416
• Record Type: Publication
• Report/Paper Numbers: 12-0486
• Files: TRIS, TRB
• Created Date: Apr 25 2012 8:00AM