TABLE 14-8a Change in Freight Ton-Miles, Energy Consumption, and Energy Efficiency: 1992-2002

TABLE 14-8a Change in Freight Ton-Miles, Energy Consumption, and Energy Efficiency: 1992-2002

1992 = 100

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  1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
Ton-miles 100 100 106 111 113 113 115 117 119 121 122
Energy consumption 100 99 104 110 112 112 119 123 129 125 125
Energy efficiency 100 101 102 101 101 101 97 95 93 97 98

NOTES: To make it easier to compare data of differing magnitudes over time, the Bureau of Transportation Statistics divided the data for all years in each category (see table 14-8b) by the initial year value and multiplied the result by 100.

Ton-miles is the sum of individual ton-miles for air carriers, intercity trucks, Class I rail, and domestic water transportation. Energy consumption is the sum of usage by air carriers, single unit 2-axle 6-tire trucks, combination trucks, Class I rail (distillate/diesel fuel), and water transportation (residual and distillate/diesel fuel oil). Marine gasoline use data were excluded because marine gasoline is used primarily in recreational vehicles. Commercial domestic aviation fuel consumption data were estimated from total commercial domestic aviation fuel consumption. General aviation data were excluded because passenger and freight data cannot be disaggregated. Pipeline data were excluded because ton-miles data include all types of petroleum products and energy consumption data were available for natural gas only.

SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, calculations based on data in table 14-8b.