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Figure 9 Index of Key Air Pollutant Emissions from U.S. Transportation: 1970-98 Index: 1970 = 1.0, 1990 = 1.0 for PM-2.5
Key: NOx = oxides of nitrogen; PM-10...
Figure 8 U.S. Carbon Dioxide Emissions from Energy Use: 1980-99 Million metric tons of carbon
Note: One ton of carbon equals 3.667 tons of carbon dioxide gas. Electric...
Figure 7 Transportation's Share of U.S. Petroleum Use: 1950-99 Million barrels per day
Note: 1998 and 1999 data are estimates.
Source: U.S. Department...
Serious energy and environmental issues are associated with transportation. The U.S . transportation sector remains almost entirely dependent on petroleum as an energy source and more than 50 percent of the petroleum used in the United States...
Figure 5 Average Household Expenditures by Major Category: 1998 (In 1998 dollars)
Source: U.S. Department of Labor, Bureau of Labor Statistics, Consumer Expenditure...
Transportation is a major sector of the U.S. economy. It moves people and goods, employs millions of workers, generates revenue, and consumes resources and services produced by other sectors of the economy. In 1999, transportation-related goods and...
Figure 3 Households by Number of Vehicles
Sources: U.S. Department of Transportation (USDOT), Federal Highway Administration, Nationwide Personal Transportation Survey, Our Nation's...
Figure 2 Fatality Rates for Selected Modes
aFor air carriers, the data were dampened, or smoothed, to reduce the month-to-month fluctuations. This dampening was performed using an exponential smoothing...
Figure 1 Fatalities in Alcohol-Related Crashes
Source: U.S. Department of Transportation, National Highway Safety Administration, National Center for Statistics and Analysis, Fatality...
Statistics published in this Pocket Guide to Transportation come from many different sources. Some statistics are based on samples and are subject to sampling variability. Statistics may also be subject to omissions and errors in reporting, recording, and processing.