Transportation Energy Efficiency

Passenger travel was 1.0 percent more energy efficient in 2001 than in 1991. During the same period, however, freight energy efficiency declined by 5.4 percent1 [1, 2].

Improvements in domestic commercial aviation are the primary reason for the gains in...

Figure 11-13 - Age of U.S. Flag Vessels by Type: 2001

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NOTES: Support includes offshore support and crewboats. Liquid barge includes tank barges.

SOURCES: USDOT, BTS, National Transportation Statistics 2002, table 1-...

Figure 3-4 - Average Monthly Number of Delays by Cause: July 2003-January 2004

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NOTES: Flights are on time if they depart from or arrive at the gate less than 15 minutes after their scheduled departure or arrival times. See table 3-4 in...

Figure 6-3 - Average Amtrak Revenue per Revenue Passenger-Mile: 1993-2002

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NOTES: Amtrak data are not available prior to 1993. Current dollar amounts (see tables 6-3 and 6-4 in appendix B) were converted to chained 2000 dollars by the...

Age of Rail, Aircraft, and Maritime Vessel Fleets

The average age of Amtrak locomotives and passenger train cars fluctuated in a narrow range for most of the 1990s (figure 11-12). The average age of locomotives was 14 years in fiscal year 2001, up 8 percent from 13 years in fiscal year 1991....

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...