The Equity Issue for Cordon-Based Congestion Pricing with Distance Toll

摘要

This paper mainly addresses the optimal equity problem under cordon-based congestion pricing with distance toll. The distance tolls are firstly determined by nonlinear function with respect to the travel distance. A user equilibrium model with elastic demand is selected in this paper to evaluate each feasible toll-charge function. In addition, a network transformation technique is adopted to modify the Frank-Wolfe method for obtaining path flows in the pricing cordon. Equity issue under distance-based pricing scheme is considered as the objective function. One modified Gini coefficient is adopted to represent the equity impact. The toll design problem is formulated as the bi-level model, which is solved by the genetic algorithm and modified Frank-Wolfe method.