@BOOK{NAP14532, author = "Transportation Research Board and National Academies of Sciences, Engineering, and Medicine", title = "Costs of Alternative Revenue-Generation Systems", doi = "10.17226/14532", abstract = "TRB\u2019s National Cooperative Highway Research Program (NCHRP) Report 689: Costs of Alternative Revenue-Generation Systems presents a framework for analysis of the direct costs incurred in generating the revenues that support federal-aid and state highway construction, operations, and maintenance and uses that framework to estimate unit costs for fuel taxes, tolling, vehicle-miles of travel fees, and cordon pricing schemes.", url = "https://nap.nationalacademies.org/catalog/14532/costs-of-alternative-revenue-generation-systems", year = 2011, publisher = "The National Academies Press", address = "Washington, DC" }