Figure 5-10 - National Air Quality Trends Index for Criteria Pollutants: 1975-97

KEY: CO = carbon monoxide; NO2 = nitrogen dioxide; PM-10 = particulate matter 10 microns in diameter or smaller.

NOTES: Numbers of monitoring sites that provide raw data vary by...

Figure 5-3 - Highway Vehicle Average Fuel Consumption: 1960-67

NOTE: This figure shows the results for the entire fleet of operating vehicles, not just new ones, and is derived from estimates of vehicle travel and total fuel consumed.

SOURCE: U.S....

Figure 5-7: World Oil Price: 1980-98

SOURCE: U.S. Department of Energy, Energy Information Administration, Annual Review of Energy 1998, DOE/EIA-0384(98) (Washington, DC: July 1999), table 5.19.

Figure 5-6 - Petroleum Production and Imports: 1980-98

SOURCE: U.S. Department of Energy, Energy Information Administration, Monthly Energy Review (Washington, DC: January 1999), tables 3.1a and b.

Figure 5-8 - National Transportation Emissions Trends Index: 1970-97

NOTE: In estimating criteria and related pollutant emissions for 1997, the Environmental Protection Agency (EPA) made adjustments to prior years. For onroad mobile sources, EPA revised 1996 data. For nonroad...

Figure 5-1 - Transportation Energy and Economic Activity: 1960-67

SOURCES: U.S. Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics 1999 (Washington, DC: Forthcoming); U.S. Department of Commerce, Bureau of Economic Analysis,...

Table 5-1 - Alternative Transportation Fuels

(Million gasoline-equivalent gallons per year)

Table 5-4 - Aircraft-Related Criteria Pollutants Emitted at Airports: 1997

(Short tons)

Table 5-3 - Mobile Source Urban Hazardous Air Pollutants: 1990 Base Year

(Estimated tons per year)

Figure 5-5 - Fuel Economy of Light Vehicles by Class and Sales Change: 1990-97

SOURCE: S.C. Davis, Transportation Energy Data Book, Edition 18, ORNL-6941 (Oak Ridge, TN: Oak Ridge National Laboratory, 1998).