Previous work at ORNL evaluated the energy consequences of changes in freight and passenger traffic levels and shifts in modal mix for the period 1950 to 1970. The research reported here extends this work to include an analysis of changes in energy intensiveness for individual modes during this period. Examination of individual modes shows that airplanes are energy-intensive and that cars and trucks are less so. Buses, mass transit, railroads, pipelines, and boats are relatively energy-efficient. Railroad energy intensiveness dropped sharply during this 20-year period because of the shift from steam engines to diesel engines. On the other hand, airplane energy intensiveness increased rapidly because of increased speed. Other modes generally showed slight increases in energy intensiveness. Energy intensiveness of inter-city freight declined during this period because of the large drop in railroad energy intensiveness. However, passenger transport became more energy intensive because of shifts to airplanes and autos and because of a general increase in energy intensiveness for all passenger modes. Results derived here are summarized in a number of ways to highlight important shifts in energy use patterns for transportation.

  • Corporate Authors:

    Oak Ridge National Laboratory

    P. O. Box 2008
    Oak Ridge, TN  United States  37831
  • Authors:
    • HIRST, E
  • Publication Date: 1973-4

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 39 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00053988
  • Record Type: Publication
  • Source Agency: Oak Ridge National Laboratory
  • Report/Paper Numbers: ORNL-NSF-EP-44
  • Contract Numbers: NSF 40-237-70, AEC W.7405-eng-26
  • Files: TRIS
  • Created Date: May 20 1981 12:00AM