Office of Operations Freight Management and Operations

Table 5-13. Current and Future Nitrogen Oxides Emissions by Freight Transportation Mode

New U.S. Environmental Protection Agency emissions standards for trucks are expected to significantly reduce emissions, however, even with large increases in truck traffic.

Table in Excel format

empty Cell Tons
2002
Tons
2010
Tons
2020
Percent Change,
2002-2010
Percent Change,
2002-2020
Heavy-duty trucks3,782,0002,186,900662,600-42-82
Freight rail857,200563,200486,400-34-43
Commercial marine1,011,000987,200938,600-2-7
Air freight8,20010,00012,4002251
Freight total5,658,4003,747,2992,099,999-34-63

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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