Table 5-13. Current and Future Nitrogen Oxides (NOx) Emissions by Freight Transportation Mode: 2002, 2010, 2020
Freight emissions of NOx are forecast to decline by almost two-thirds over the next two decades. Trucks are by far the largest contributor to freight emissions nationally, producing two-thirds of NOx from the freight sector. The U.S. Environmental Protection Agency passed new rules requiring the use of ultra low sulfur diesel (ULSD) fuel in heavy-duty trucks and other diesel-powered highway vehicles beginning in June 2006. ULSD will reduce emissions of NOx and enable the use of advanced pollution control technologies to meet 2007 emissions standards.
Source: U.S. Department of Transportation, Federal Highway Administration, Impacts of Freight Movement on Air Quality, prepared by ICF Consulting, January 26, 2005, based on U.S. Environmental Protection Agency, National Emissions Inventory.
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