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Transportation energy data book: edition 23 - Oak Ridge National ...

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Great care should be taken when comparing modal <strong>energy</strong> intensity <strong>data</strong> among modes. Because of the inherent<br />

differences between the transportation modes in the nature of services, routes available, and many additional<br />

factors, it is not possible to obtain truly comparable national <strong>energy</strong> intensities among modes.<br />

Table 2.15<br />

Energy Intensities of Freight Modes, 1970–2001<br />

Heavy single-unit and<br />

Class I freight railroad Domestic waterborne<br />

combination trucks<br />

commerce<br />

Year (Btu per vehicle-mile) (Btu per freight car-mile) (Btu per ton-mile) (Btu per ton-mile)<br />

1970 24,960 17,669 691 545<br />

1971 24,485 18,171 717 506<br />

1972 24,668 18,291 714 522<br />

1973 24,777 18,468 677 576<br />

1974 24,784 18,852 681 483<br />

1975 24,631 18,739 687 549<br />

1976 24,566 18,938 680 468<br />

1977 24,669 19,226 669 458<br />

1978 24,655 18,928 641 383<br />

1979 24,745 19,188 618 436<br />

1980 24,757 18,742 597 358<br />

1981 25,058 18,629 572 360<br />

1982 24,296 18,404 553 310<br />

1983 <strong>23</strong>,852 17,864 525 286<br />

1984 <strong>23</strong>,585 17,795 510 346<br />

1985 <strong>23</strong>,343 17,500 497 446<br />

1986 <strong>23</strong>,352 17,265 486 463<br />

1987 22,922 16,790 456 402<br />

1988 22,596 16,758 443 361<br />

1989 22,411 16,894 437 403<br />

1990 22,795 16,619 420 387<br />

1991 22,749 15,835 391 386<br />

1992 22,608 16,043 393 398<br />

1993 22,373 16,056 389 389<br />

1994 22,193 16,340 388 369<br />

1995 22,096 15,992 372 374<br />

1996 22,109 15,747 368 412<br />

1997 21,340 15,784 370 415<br />

1998 21,514 15,372 365 435<br />

1999 22,880 15,363 363 457<br />

2000 <strong>23</strong>,443 14,917 352 508<br />

2001 <strong>23</strong>,<strong>23</strong>7 15,107 346 444<br />

1970–2001 -0.2%<br />

Average annual percentage change<br />

-0.5% -2.2% -0.7%<br />

1991–2001 0.2% -0.6% -1.2% 1.4%<br />

Source:<br />

See Appendix A for Freight Mode Energy Intensities.<br />

TRANSPORTATION ENERGY DATA BOOK: EDITION <strong>23</strong>—2003<br />

2–19

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