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TRANSPORTATION ENERGY DATA BOOK: EDITION 20 - Center for ...

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I Great<br />

care should be taken when comparing modal energy intensity data among modes. Because ojthe inherent<br />

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

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

Year<br />

1970<br />

Heavy single-unit and<br />

combination trucks<br />

(Btu per vehicle-mile)<br />

24,154<br />

Table 2.14<br />

Energy Intensities of Freight Modes, 1970-98<br />

1971 23,694 18,814<br />

1972 23,871 18,292<br />

1973 23,977 18,468<br />

1974 23,983 18,852<br />

1975 23,836 18,741<br />

1976 23,773 18,938<br />

1977 23,873 19,225<br />

197s 24,013 18,930<br />

1979 24,260 19,187<br />

1980 24,431 18,742<br />

1981 24,892 18,628<br />

1982 24,296 18,403<br />

1983 23,740 17,863<br />

1984 23,363 17,797<br />

1985 23,015 17,500<br />

1986 22,917 17,265<br />

1987 22,391 16,791<br />

1988 22,586 16,758<br />

1989 22,391 16,896<br />

1990 22,765<br />

1991 22,710<br />

1992 22,559<br />

1993 22,308<br />

1994 22,159<br />

1995 22,172<br />

1996 21,964<br />

1997 21,340<br />

1998 21,514<br />

1970-9s -0.4%<br />

1988-98 -0.5%<br />

Source:<br />

See Appendix A <strong>for</strong> Table 2.14.<br />

Class I freight railroad Domestic waterborne<br />

commerce<br />

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

17,668 691 545<br />

1’6,618<br />

5,834<br />

6,044<br />

6,055<br />

6,338<br />

15,993<br />

15,747<br />

15,783<br />

15,372<br />

Average annualpercentage change<br />

-0.5%<br />

-0.9%<br />

717<br />

714<br />

677<br />

681<br />

687<br />

680<br />

669<br />

641<br />

618<br />

597<br />

572<br />

553<br />

525<br />

510<br />

497<br />

486<br />

456<br />

443<br />

437<br />

4<strong>20</strong><br />

391<br />

393<br />

389<br />

388<br />

372<br />

368<br />

370<br />

<strong>TRANSPORTATION</strong><strong>ENERGY</strong><strong>DATA</strong>BOOIC <strong>EDITION</strong>~O-<strong>20</strong>00<br />

365<br />

506<br />

522<br />

576<br />

483<br />

549<br />

468<br />

458<br />

3S3<br />

457<br />

358<br />

360<br />

310<br />

319<br />

346<br />

446<br />

463<br />

402<br />

361<br />

403<br />

388<br />

386<br />

398<br />

389<br />

369<br />

374<br />

412<br />

415<br />

436<br />

-2.3% -0.8%<br />

-1.9% 1.9%

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