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Network Calibration and Validation of Dynamic Traffic Assignment with Nationwide Freeway Network Data of South Korea  

Jeong, Sang-Mi (국토연구원)
Kim, Ik-Ki (한양대학교 교통시스템공학과)
Publication Information
Journal of Korean Society of Transportation / v.26, no.4, 2008 , pp. 205-215 More about this Journal
Abstract
As static traffic assignment has reached its limitation with ITS policy applications and due to the increase of interest in studies of ITS policies since the late 1980's, dynamic traffic assignment has been considered a tool to overcome such limitations. This study used the Dynameq program, which simulates route choice behavior by macroscopic modeling and dynamic network loading and traffic flow by microscopic modeling in consideration of the feasibility of the analysis of practical traffic policy. The essence of this study is to evaluate the feasibility for analysis in practical transportation policy of using the dynamic traffic assignment technique. The study involves the verification of the values estimated from the dynamic traffic assignment with South Korea's expressway network and dynamic O/D data by comparing results with observed link traffic volumes. This study used dynamic O/D data between each toll booth, which can be accurately obtained from the highway Toll Collection System. Then, as an example of its application, exclusive bus-lane policies were analyzed with the dynamic traffic assignment model while considering hourly variations.
Keywords
Dynamic Traffic Assignment; OD data from Toll Collection System; Dynamic Network Calibration; Exclusive median Bus-Lane Policy;
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