TRANSPORTATION ENERGY DATA BOOK: EDITION 20 - Center for ...

Table 4.7
Emissions of Volatile Organic Compounds from Highway Vehicles, 1970-98”
(thousand short tons)
Percent of
Source category 1970 1975 1980 1985 1990 1992 1993 1994 1995 1996 1997 1998 total, 1998
Gasoline powered
Light vehicles & motorcycles 9,193 7,248 5,907 5,864 3,947 3,832 3,812 3,748 3,426 2,875 2,796 2,832 47.6%
Light trucksb 2,770 2,289 2,059 2,425 1,622 1,588 1,647 1,909 1,629 2,060 2,017 2,015 33.9%
Heavy vehicles 1,206 1,038 830 988 662 739 772 906 735 917 889 877 14.7%
Total 13,169 10,575 8,796 9,277 6,231 6,159 6,231 6,563 5,790 5,852 5,702 5,724 96.3%
Diesel powered
Light vehicles c 15 8 8 13 13 13 13 14 12 12 12 0.2%
Light trucksb c c 2 2 3 3 3 4 4 5 5 5 0.1%
Heavy vehicles 266 335 392 360 297 302 3-o 1 313 302 245 227 205 3.4%
Total 266 350 402 370 313 318 317 330 320 262 244 222 3.7%
Total
Highway vehicle total 13,435 10,925 9,198 9,647 6,544 6,477 6,548 6,893 6,110 6,114 5,946 5,946 100.0%
Percent diesel 2.0% 3.2% 4.4% 3.8% 4.8% 4.9% 4.8% 4.8% 5.2% 4.3% 4.1% 3.7%
Source:
U. S. Environmental Protection Agency, National Air Pollutant Emission Trends, 1900-1998, 2000, p. A-16 and annual.
(Additional resources: www.epa.gov/oarloaqps)
“The sums of subcategories may not equal total due to rounding.
bLess than 8,500pounds.
‘Data are not available.