A Combined Trip Generation, Trip Distribution, Modal Split, and Trip Assignment Model

K. Nabil Ali Safwat and Thomas L. Magnanti
Additional contact information
K. Nabil Ali Safwat: Texas A&M University, College Station, Texas 77843
Thomas L. Magnanti: Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

Transportation Science, 1988, vol. 22, issue 1, 14-30

Abstract: Modeling of transportation systems must invariably balance behavioral richness and computational tractability. In this paper, we develop a transportation equilibrium model and an algorithm for the simultaneous prediction of trip generation, trip distribution, modal split, and trip assignment on large-scale networks. The model achieves a practical compromise between behavioral and computational aspects of modeling the problem. It is formulated as an equivalent convex optimization problem, yet it is behaviorally richer than other models that can be cast as equivalent convex programs. Although the model is not as behaviorally rich as the most general equilibrium models, it has computational advantages. The applications reported in this paper of the model to real systems, i.e., the intercity transport network of Egypt and the urban transportation network of Austin, Texas, illustrate the computational attractiveness of the approach. These results indicate that equivalent optimization formulations are not as restrictive as previously thought, and hence, the equivalent convex programming approach for modeling and predicting equilibrium on transportation systems remains a viable and fruitful avenue for future consideration.

Date: 1988
References: Add references at CitEc
Citations: View citations in EconPapers (21)

Downloads: (external link)
http://dx.doi.org/10.1287/trsc.22.1.14 (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:inm:ortrsc:v:22:y:1988:i:1:p:14-30

Access Statistics for this article

More articles in Transportation Science from INFORMS Contact information at EDIRC.
Bibliographic data for series maintained by Chris Asher ().