Network reliability‐based optimal toll design |
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| Authors: | Hao Li Michiel C J Bliemer Piet H L Bovy |
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| Institution: | Hao Li, Michiel C.J. Bliemer and Piet H.L. Bovy, Delft University of Technology, Faculty of Civil Engineering and Geosciences, Department of Transport and Planning, Delft, The Netherlands |
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| Abstract: | Optimal toll design from a network reliability point of view is addressed in this paper. Improving network reliability is proposed as a policy objective of road pricing. A reliability‐based optimal toll design model, where on the upper level network performance including travel time reliability is optimized, while on the lower level a dynamic user‐equilibrium is achieved, is presented. Road authorities aim to optimize network travel time reliability by setting tolls in a network design problem. Travelers are influenced by these tolls and make route and trip decisions by considering travel times and tolls. Network performance reliability is analyzed for a degradable network with elastic and fluctuated travel demand, which integrates reliability and uncertainty, dynamic network equilibrium models, and Monte Carlo methods. The proposed model is applied to a small hypothesized network for which optimal tolls are derived. The network travel time reliability is indeed improved after implementing optimal tolling system. Trips may have a somewhat higher, but more reliable, travel time. |
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