Figure 11-3 - Rural Roads in Poor or Mediocre Condition by Functional Class: 1993-2002

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NOTES: Data are for the 50 U.S. states and the District of Columbia. The terms poor and mediocre as used here are Federal Highway Administration (FHWA...

Figure 1-3 - Multifactor Productivity: 1991-2001

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NOTE: Rail productivity data are only available through 1999. Source data are indexes with base years of 1997 (air), 1996 (business), and 1987 (rail). BTS reindexed these data so that 1991...

Figure 10-6 - Oil Spills Reported to the U.S. Coast Guard by Source: 1991-2001

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NOTE: Data are preliminary.

SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, based on U.S. Department...

Figure 3-2 - Change in Travel Time Index by Metro Area Population: 1991 and 2001

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KEY: TTI = Travel Time Index.

NOTE: The TTI is the ratio of peak period travel time to free-flow travel time. It expresses the average...

Figure 11-10 - Median Age of Cars and Trucks: 1992-2002

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NOTE: Trucks represents all types of trucks, including light trucks (sport utility vehicles, vans, and pickup trucks).

SOURCES: U.S. Department of...

Transportation Energy Prices

Transportation fuel prices (in chained 2000 dollars1) experienced short-term flucuations between 1993 and 2003 (figure 15-4). For instance, the average price of motor fuel (all types of gasoline) decreased 14 percent in 1998, to $1.16 per gallon from $1.35 per...

Figure 9-3 - Highway Fatalities per 100 Million Vehicle-Miles for Selected Vehicle Types: 1992-2002

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NOTES: Large trucks are defined as trucks over 10,000 pounds gross vehicle weight rating (GVWR), including single-unit trucks and truck...

Figure 5-1 - Miles Traveled per Day: 2001

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NOTE: Data are from the daily travel segment of the 2001 National Household Travel Survey. Long-distance travel data (i.e., trips of 50 miles or more collected during a 4-week travel period) are...

Figure 15-7 - Passenger-Miles of Travel, Energy Consumption, and Energy Efficiency Index: 1991-2001

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NOTE: For detailed information on data used here, see tables 15-7 and 15-8 in appendix B.

SOURCES: Passenger-miles...

Vehicle Loadings on the Interstate Highway System

Large combination trucks1 represent a small portion of traffic on the U.S. Interstate Highway System [1]. Because they are heavier, they may cause more pavement damage, a measurement that is estimated in terms of vehicle loadings (box 4-A). In...