Figure 5-9 - Air Travel Time Index and Air Travel Time Variability Index Compared with Operated Flights: 1990-2004 Yearly averages

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NOTES: These results, based on ongoing research, are preliminary. Operated flights includes data for...

Figure 4-10 - Workers Driving Alone to Work by Selected Characteristics: 1993 and 2003

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SOURCES: U.S. Department of Housing and Urban Development and U.S. Department of Commerce, U.S. Census Bureau, American Housing Survey for the...

BOX 6-B - Unlinked Passenger Trips vs. Number of Passengers

All transit ridership data relate to trips taken-not to people-because that is how data are collected and reported. The heavy use of passes, transfers, joint tickets, and cash by people transferring from one vehicle...

Figure 12-9 - Florida Hurricane Season Cancelled Flights: June-November 2003 and June-November 2004

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NOTE: Data are limited to the hurricane season for flights into and out of Florida airports.

SOURCE: USDOT, RITA,...

Greenhouse Gas Emissions

The transportation sector's greenhouse gas (GHG) emissions totaled 1,864 teragrams of carbon dioxide equivalent (TgCO2Eq) in 2003.1 This represented 27 percent of total U.S. GHG emissions in 2003 (box 15-B). Transportation emissions grew 20 percent since...

Figure 15-9 - Hazardous Materials Injuries by Selected Mode: 1994-2004

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NOTES: Data for modes not included in these figures are in table 15-9  in appendix B. The 1996 spike in rail injuries was due mostly to a train derailment in...

Figure 1-23 - Change in Transit Rail Vehicle-Miles: 1993-2003

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NOTES: Light trucks include sport utility vehicles, minivans, and pickup trucks. See Glossary for definitions of transit rail service types. To make it easier to compare...

Figure 4-1 - Daily Trip-Miles by Mode: 2001

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NOTE: Excludes trips where mode was not reported. Other includes charter/tour/intercity bus; taxi, limousine, hotel/airport shuttle bus; intercity train; and other not elsewhere classified...

Merchant Marine Vessel Capacity

The average capacity of all vessels calling at U.S. ports grew 9 percent between 1998 and 2003 to 49,557 deadweight tons (dwt)1 per call, while the number of all vessel calls increased by only 1 percent [3]. The value of U.S....

Age of Highway and Transit Fleet Vehicles

The median age of the automobile fleet in the United States increased, by 19 percent, from 7.5 years in 1994 to 8.9 years in 2004. The median age of the truck fleet,1 by contrast, began to increase in the early 1990s but has...