This study proposes a practical trial-and-error method to solve the optimal toll design problem of cordon-based pricing, where\nonly the traffic counts autonomously collected on the entry links of the pricing cordon are needed. With the fast development\nand adoption of vehicle-to-infrastructure (V2I) facilities, it is very convenient to autonomously collect these data. Two practical\nproperties of the cordon-based pricing are further considered in this article: the toll charge on each entry of one pricing cordon is\nidentical; the total inbound flow to one cordon should be restricted in order to maintain the traffic conditions within the cordon\narea. Then, the stochastic user equilibrium (SUE) with asymmetric link travel time functions is used to assess each feasible toll\npattern. Based on a variational inequality (VI) model for the optimal toll pattern, this study proposes a theoretically convergent\ntrial-and-error method for the addressed problem, where only traffic counts data are needed. Finally, the proposed method is\nverified based on a numerical network example.
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