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Energy and Environment
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Freight Facts and Figures 2011 (FHWA)
Volume and value of freight shipments, the extent of the network, employment and productivity, and related safety, energy use, and environmental effects.
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Light-Duty Automotive Technology, Carbon Dioxide Emissions, and Fuel Economy Trends, 1975-2010 (EPA)
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Annual Energy Outlook (DOE)
Projections to 2035: Includes vehicle miles traveled, alternative fuel vehicle data
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Transportation Energy Data Book (DOE)
Statistics on transportation activity and energy use
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Urban Mobility Report (TTI)
Congestion study showing time, fuel and money wasted while stuck in traffic. Covers 439 urban areas across the US, from the Texas Transportation Institute
