Analysis and Cost-Recovery Optimization Methodology for a Fixed-Class Truck Tolling Structure

Abstract

The purpose of this study is to develop a methodology for examining existing class-based toll structures for “fairness” between different commercial truck classes and for optimizing toll rates within each class to fully recover the total cost of pavement consumed by trucks. A theoretical methodology for setting toll rates to optimize cost recovery within a given class and achieve fairness between classes is defined. Methods for analyzing existing toll rate structures using weigh-in-motion (WIM) data in the absence of full vehicle identification information are also described. A case study of Texas State Highway 130 demonstrates the usefulness of WIM data for analysis of a toll classification system based on number of axles.