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Integrated Trip Distribution/Mode Choice Model and Sensitivity Analysis  

Im, Yong-Taek (전남대학교 물류교통학전공)
Publication Information
Journal of Korean Society of Transportation / v.29, no.2, 2011 , pp. 81-89 More about this Journal
Abstract
Trip distribution is the second step of the conventional travel demand estimation process, which connects trips between origin and destination, while transport mode choice is the third step of the process, which chooses transport mode among several modes serving for each origin-destination pair. Although these two steps have closely connected, they have been estimated independently each other in the estimation procedure. This paper presents an integrated model combining trip distribution and transport mode choice, and also presents its solution algorithm. The model integrates gravity model adopted for the trip distribution process with logit model employed for the mode choice process. The model would be expected to cope with the inconsistency issue existing in the conventional travel demand estimation procedure. This paper also presents an equilibrium condition, sensitivity of the model, and compares them with those of existing models.
Keywords
integrated model; gravity model; logit mode choice model; equilibrium; sensitivity; elasticity;
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Times Cited By KSCI : 2  (Citation Analysis)
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