## Table 4-25: Energy Intensity of Class I Railroada Freight Service

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1960 1965 1970 1975 1980 1985 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
Revenue freight ton-miles (millions) 572,309 697,878 764,809 754,252 918,958 876,984 1,033,969 1,038,875 1,066,781 1,109,309 1,200,701 1,305,688 1,355,975 1,348,926 1,376,802 1,433,461 1,465,960 1,495,472 1,507,011
Car-miles (millions) 28,170 29,336 29,890 27,656 29,277 24,920 26,159 25,628 26,128 26,883 28,485 30,383 31,715 31,660 32,657 33,851 34,590 34,243 34,680
Tons per car load 44 49 55 61 67 68 67 66 66 64 63 65 67 63 64 63 63 64 63
Fuel consumed (million gallons) 3,463 3,592 3,545 3,657 3,904 3,110 3,115 2,906 3,005 3,088 3,334 3,480 3,579 3,575 3,583 3,715 3,700 3,710 3,730
Energy intensity (Btu/revenue freight ton-mile) 839 714 643 672 589 492 418 388 391 386 385 370 366 368 361 359 350 344 343
Energy intensity (Btu/car-mile) 17,051 16,983 16,450 18,341 18,495 17,310 16,516 15,727 15,952 15,932 16,234 15,886 15,652 15,662 15,218 15,222 14,836 15,027 14,918

KEY: Btu = British thermal unit.

a Class I railroads are those that have operating revenues of \$272 million or more.

NOTE

The heat equivalent factor used for Btu conversion is 138,700 Btu/gallon.

SOURCE

Association of American Railroads, Railroad Facts (Washington, DC: November 2003), pp. 34, 37, and 40.