• AAR National Rail Freight Infrastructure Capacity & Investment Study
• AASHTO - Freight Rail Report
• AASHTO Revenue Sources to Fund Transportation Needs
• ATRI - Critical Issues in the Trucking Industry - 2007
• ATRI - Defining the Legacy for Users: Understanding Strategies and Implications for Highway Funding
• FHWA - Cost Allocation Study - Executive Summary - August 1997
• FHWA - Freight Analysis Framework for Michigan
• MDOT - Michigan Truck Weights
• MDOT Long Range Plan - Revenue Gap and Investment Packages Report
• MDOT Long Range Plan, Freight Profile Technical Report
• Michigan Farm Bureau - Agricultural Transportation Overview
• Michigan Farm Bureau - Michigan Agriculture's Transportation Needs
• Surface Transportation and the Global Economy
• TRIP - Paying the Price for Inadequate Roads in Michigan
• U.S. Department of Agriculture - Ethanol Transportation Backgrounder