TABLE 5-3 - Transportation Air Pollutant Emissions From On-Road Mobile Sources: 2004-2008
Monday, September 10, 2012
TABLE 5-3 - Transportation Air Pollutant Emissions From On-Road Mobile Sources: 2004-2008
Millions of short tons
| Carbon monoxide | Nitrogen oxides | |||||
|---|---|---|---|---|---|---|
| All sources | Transportation, total | Transportation (percent of total) | All sources | Transportation, total | Transportation (percent of total) | |
| 2004 | 99.04 | 52.56 | 53.1 | 19.79 | 6.95 | 35.1 |
| 2005 | 93.03 | 48.54 | 52.2 | 19.12 | 6.49 | 34.0 |
| 2006 | 87.92 | 45.32 | 51.5 | 18.11 | 6.06 | 33.5 |
| 2007 | 82.80 | 42.09 | 50.8 | 17.32 | 5.64 | 32.5 |
| 2008 | 77.69 | 38.87 | 50.0 | 16.34 | 5.21 | 31.9 |
| Volatile organic compounds | Sulfur dioxide | |||||
|---|---|---|---|---|---|---|
| All sources | Transportation, total | Transportation (percent of total) | All sources | Transportation, total | Transportation (percent of total) | |
| 2004 | 19.79 | 4.38 | 22.1 | 14.82 | 0.18 | 1.2 |
| 2005 | 18.42 | 4.11 | 22.3 | 14.84 | 0.15 | 1.0 |
| 2006 | 17.59 | 3.88 | 22.1 | 13.66 | 0.12 | 0.9 |
| 2007 | 16.76 | 3.65 | 21.8 | 13.01 | 0.09 | 0.7 |
| 2008 | 15.93 | 3.42 | 21.5 | 11.43 | 0.06 | 0.6 |
NOTE: Transportation, total data include emissions by highway vehicles only.
SOURCE: U.S. Environmental Protection Agency, Clearinghouse for Inventories and Emissions Factors (CHIEF), Current Emission Trends Summaries, available at http://www.epa.gov/ttn/chief/trends/index.html as of November 2009 as reported in U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics, tables 4-40, 4-41, 4-42, and 4-45, available at http://www.bts.gov/publications/national_transportation_statistics/ as of January 2010.