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A Review about the Need for Modelling Toll Road with Different Value of Travel Time  

Kim, Jae-Yeong (한국개발연구원 공공투자관리센터)
Son, Ui-Yeong (서울시립대학교 교통공학과)
Jeong, Chang-Yong (서울시립대학교 교통공학과)
Publication Information
Journal of Korean Society of Transportation / v.27, no.4, 2009 , pp. 31-40 More about this Journal
Abstract
Some road charges toll to finance the cost or to manage traffic congestion. With a growth of PPI projects, toll roads would be increase continuously. Tolls have a considerable influence on user's route choice, and sometimes can affect to the departure time and even to mode choice. For modelling toll roads, user's WTP or VOT has an important role and it is general that VOT is equivalent to the wages of workers. The current way of modelling technique yields various toll price elasticity from low to high. When there exist few alternative routes, unrealistic result that all traffic assigned to some shortest path may occur. The toll price elasticity can be influenced by alternative route and congestion level, but some result shows nearly unrealistic patterns. The model to forecast more realistic toll road demand is very essential for estimating toll revenue, choice of optimal toll level & collecting location and establishing toll charge strategy. This paper reviewed some literatures about toll road modelling and tested case study about the assignment technique with different VOT. The case study shows that using different VOT yields more realistic result than the use of single VOT.
Keywords
Toll Roads; Demand Modelling; Value of Travel Time; User Heterogeneity; Traffic Assignment;
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