Levels of Disaggregation and Degrees of Aggregate Constraint in Transportation System Modeling

This paper compares modeling approaches used in transportation system modeling and in system modeling more generally. It considers two dimensions: (a) the level of disaggregation in the representation of system elements and (b) the degree of aggregate constraint on the system. Furthermore, it incorporate both the equilibrium and the process simulation approaches and thereby enters the debate concerning the relative merits and (perceived?) flaws of these two approaches. The intentions of this paper are (a) to engender a greater appreciation for the advantages and disadvantages within the range of available techniques and the potential for matching technique with context in a given instance and (b) to present a more complete view of the linkages among techniques and the scope for hybrid approaches. Coverage includes some new, emerging approaches, including the combination of an activity- based model with equilibrium treatments for both land use and network assignment. Therefore, the paper provides the framework for a discussion of the opportunities and challenges arising with the implementation of activity- based models and transportation system models more generally, helping progress beyond the standard positions taken in the debate about equilibrium versus process simulation and aiding the consideration of appropriate directions for further research and development work.

• Record URL:
  • https://nap.nationalacademies.org/catalog/13678
• 
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780309113434
• Authors:
  • Hunt, John Douglas
• Conference:
  • Innovations in Travel Demand Modeling Conference
  • Location: Austin Texas, United States
  • Date: 2006-5-21 to 2006-5-23
• Publication Date: 2008

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 3-7
• Monograph Title: Innovations in Travel Demand Modeling: Summary of a Conference. Volume 2: Papers
• Serial:
  • Transportation Research Board Conference Proceedings
  • Volume: 2
  • Issue Number: 42
  • Publisher: Transportation Research Board
  • ISSN: 1073-1652

Subject/Index Terms

• TRT Terms: Constraints; Disaggregate analysis; Equilibrium (Systems); Forecasting; Implementation; Innovation; Land use; Mathematical models; Transportation system management; Travel demand
• Uncontrolled Terms: Activity-based models; Network assignment; Process simulation; Transportation systems
• Subject Areas: Highways; Planning and Forecasting; Public Transportation; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01121629
• Record Type: Publication
• ISBN: 9780309113434
• Files: TRIS, TRB
• Created Date: Feb 13 2009 4:26PM