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142 � Transportation Statistics Annual Report 1996
FIGURE 7-6: VOLATILE ORGANIC COMPOUNDS EMISSIONS FROM U.S. TRANSPORTATION, 1970–94
Millions of short tons
40
20
0
–20
BJ B
J J J J J J J J J J J J J
J J
J
J
J J J J
J J J
B B
B B B B B B B B B B B B B B B
B B B B B B
–40
1970 1975 1980 1985 1990 1994
J
Emissions had 1970
conditions continued
B Actual emissions
Modal share of travel
Emissions rate
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, based on analysis of data from the U.S.
Environmental Protection Agency.
Millions of short tons
FIGURE 7-7: NITROGEN OXIDES EMISSIONS FROM U.S. TRANSPORTATION, 1970–94
20
10
0
–10
B B B B B B B B B B B B B B B B B B B B B B B B B
J J J J J J J J
J J
J J
J
J
J J
J
J
J
J J J J J J
–20
1970 1975 1980 1985 1990 1994
J
Emissions had 1970
conditions continued
B Actual emissions
Modal share of travel
Emissions rate
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, based on analysis of data from the U.S.
Environmental Protection Agency.