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Using time-varying tolls to optimize truck arrivals at ports
Authors:Xiaoming Chen  Xuesong Zhou  George F List
Institution:aDepartment of Civil and Environmental Engineering, University of Utah, 122 South Central Campus Dr., Salt Lake City, UT 84112-0561, USA;bDepartment of Civil, Construction and Environmental Engineering, North Carolina State University, Building IV, Centennial Campus, Raleigh, NC 27695-7908, USA
Abstract:An analytical point-wise stationary approximation model is proposed to analyze time-dependent truck queuing processes with stochastic service time distributions at gates and yards of a port terminal. A convex nonlinear programming model is developed which minimizes the total truck turn time and discomfort due to shifted arrival times. A two-phase optimization approach is used to first compute a system-optimal truck arrival pattern, and then find a desirable pattern of time-varying tolls that leads to the optimal arrival pattern. Numerical experiments are conducted to test the computational efficiency and accuracy of the proposed optimization models.
Keywords:Port management  First best toll pricing  Time-dependent queuing model  Stochastic service time distribution
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