Integration of Activity-Based Modeling and Dynamic Traffic Assignment
The traditional trip-based approach to transportation modeling has been used for the past 30 years. Because of limitations of traditional planning for short-term policy analysis, researchers have explored alternative paradigms for incorporating more behavioral realism in planning methodologies. On the demand side, activity-based approaches have evolved as an alternative to traditional trip-based transportation demand forecasting. On the supply side, dynamic traffic assignment models have been developed as an alternative to static assignment procedures. Much of the research effort in activity-based approaches (the demand side) and dynamic traffic assignment techniques (the supply side) has been undertaken relatively independently. To maximize benefits from these advanced methodologies, it is essential to combine them through a unified framework. The objective of this paper is to develop a conceptual framework and explore practical integration issues for combining the two streams of research. Technical, computational, and practical issues involved in this demand–supply integration problem are discussed. The framework is general, but specific technical details related to the integration are explored by using CEMDAP for activity-based modeling and VISTA for dynamic traffic assignment modeling. Solution convergence properties of the integrated system, specifically examining different criteria for convergence, different methods of accommodating time of day, and the influence of step size on convergence are studied. The integrated system developed is empirically applied to two sample networks selected from the Dallas–Fort Worth system in Texas.
- Record URL:
- Summary URL:
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Availability:
- Find a library where document is available. Order URL: http://www.trb.org/Main/Public/Blurbs/160602.aspx
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Authors:
- Lin, Dung-Ying
- Eluru, Naveen
- Waller, S Travis
- Bhat, Chandra R
- 0000-0002-0715-8121
- Publication Date: 2008
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References;
- Pagination: pp 52-61
- Monograph Title: Travel Demand 2008
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Serial:
- Transportation Research Record: Journal of the Transportation Research Board
- Issue Number: 2076
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Dynamic traffic assignment; Microsimulation; Transportation planning
- Identifier Terms: CEMDAP (Computer program); VISTA (Computer program)
- Uncontrolled Terms: Activity based modeling; Integration (Models)
- Geographic Terms: Dallas-Fort Worth Metropolitan Area
- Subject Areas: Highways; Planning and Forecasting; I72: Traffic and Transport Planning;
Filing Info
- Accession Number: 01099452
- Record Type: Publication
- ISBN: 9780309125918
- Files: TRIS, TRB, ATRI
- Created Date: May 21 2008 7:08AM