Transportation energy data book: edition 23 - Oak Ridge National ...

12–8
Gasoline-powered vehicles are responsible for 80% of highway vehicle emissions of volatile
organic compounds. VOC emissions from highway vehicles in 2001 were less than half the
1980 level.
Table 12.7
Emissions of Volatile Organic Compounds from Highway Vehicles, 1980–2001 a
(thousand short tons)
Source category 1980 1985 1990 1995 2000 2001
Percent of
total, 2001
Gasoline powered
Light vehicles & motorcycles 9,304 7,962 5,690 3,768 2,903 2,620 45.0%
Light trucksb 2,864 2,908 2,617 2,225 1,929 1,805 31.0%
Heavy vehicles 1,198 959 633 421 256 224 3.9%
Total 13,366 11,829 8,940 6,414 5,088 4,649 79.9%
Diesel powered
Light vehicles 16 19 18 9 3 3 0.1%
Light trucksb 28 22 15 10 4 4 0.1%
Heavy vehicles 459 483 415 315 230 218 3.7%
Total 503 525
Total
448 335 238 225 3.9%
Highway vehicle total 13,869 10,545 9,388 9,376 6,443 5,816 100.0%
Percent diesel 3.6% 5.0% 4.8% 3.6% 3.7% 3.9%
Source:
U. S. Environmental Protection Agency, National Emission Inventory Air Pollutant Emission Trends website
www.epa.gov/ttn/chief/trends (Additional resources: www.epa.gov/oar/oaqps)
a The sums of subcategories may not equal total due to rounding.
b Less than 8,500 pounds.
TRANSPORTATION ENERGY DATA BOOK: EDITION 23—2003