Efficient movement of freight within the United States and across its borders is a critical enabler of future U.S. economic growth. The authors provide an overview of the freight-transportation system and the problems it faces, concluding with a discussion of key system-modernization issues, including increasing capacity, making the system less vulnerable to disruption, addressing environmental concerns, and building support for funding.

"Supported by the Supply Chain Policy Center Executive Committee." "MG-883-SCPCEC"--P. [4] of cover.

Introduction -- Approach and interview summary -- Evolution and state of the U.S. freight-transportation system -- Determinants of highway, rail, and port capacity -- Overarching issues for improving freight transportation and implications for policy.