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Optimizing Toll Loc...
Optimizing Toll Locations and Levels Using a Mixed Integer Linear Approximation Approach
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- Ekström, Joakim (författare)
- Linköpings universitet,Kommunikations- och transportsystem,Tekniska högskolan
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- Sumalee, Agachai (författare)
- Department of Civil and Structural Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong, China
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- Lo, Hong K. (författare)
- Department of Civil and Environmental Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
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(creator_code:org_t)
- Elsevier, 2012
- 2012
- Engelska.
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Ingår i: Transportation Research Part B. - : Elsevier. - 0191-2615 .- 1879-2367. ; 46:7, s. 834-854
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- This paper addresses the toll design problem of finding the toll locations and levels in a congestion pricing scheme, which minimize the total travel time and the toll-point cost (set-up and operational costs of the toll collecting facilities). Road users in the network are assumed to be distributed according to the principle of user equilibrium, with the demand assumed to be fixed and given a priori. The toll design problem is commonly formulated as a nonlinear program, which in general is non-convex and non-smooth, and thus difficult to solve for a global optimum. In this paper, the toll design problem is approximated by a mixed integer linear program (MILP), which can be solved to its globally optimal solution. The MILP also gives a lower bound estimation of the original non-linear problem, and the accuracy of the approximation is improved by iteratively updating the MILP. To demonstrate the approach, we apply the algorithm to two networks: a smaller network with 18 links and 4 OD-pairs to illustrate the properties of the approach, and the Sioux Falls network with 87 links and 30 OD-pairs to demonstrate the applicability of the approach.
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