United States Department of Transportation
i
Intermodal freight planning at the multi-state corridor level : state of the practice and future directions
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1997-11-01
[PDF-1.77 MB]
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Edition:Final
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Abstract:Through the last half of the 19th century and most of the 20th century, increases in transportation productivity came directly from massive capital investment in the modal systems. With the completion of the Interstate highway system the focus has changed. Fiscal constraints preclude system expansion at the pace needed to support continued robust economic growth. Therefore, attention in the public sector has shifted to getting more productivity out og the existing modal infrastructure through improvements in system operation and management. This shift from capital construction to asset management is also motivated by increased emphasis at all governmental levels on minimizing the adverse environmental and societal effects of transportation activities.
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