When discussing energy efficiency of the various modes of transportation one has to be very cautious about what to compare. It is obvious that there exist differences with respect to energy efficiencies, but differences also occur in the general patterns of utilization. This paper focuses on intercity transportation, of goods and passengers respectively. It contains a general discussion of what comparisons on energy efficiency ought to comprise. In short, any comparisons of the energy efficiencies of the various modes of transportation have to apply to transportation services that usually are, or at least could be, carried out by all the modes. It is also important that the energy forms used for propulsion are measured at compatible points in the applicable chains of transformations and transmissions. Further, any analyses are incomplete unless one includes energy requirements for manufacturing and maintaining carriers. Also energy requirements for constructing and maintaining infrastructures have to be considered. The results of some calculations are demonstrated, which include all the aspects mentioned. Data that are used apply to the Swedish transportation system. The comparisons involve for freight transportation: truck, railway, and coastal shipping; and for passenger transportation: passenger cars, bus, railway, and airplane. It is difficult to draw some simple conclusions of the results obtained. The results indicate, however, that variations within each mode, under certain circumstances that are related to existing background data, are even greater than the differences between the modal averages with respect to energy efficiencies.(a) /TRRL/

  • Corporate Authors:

    International Railway Congress Association

    17-21 rue de Louvrain
    1000 Brussels,   Belgium 
  • Authors:
    • Kordi, I
  • Publication Date: 1978-12

Media Info

  • Features: Figures;
  • Pagination: p. 951-956
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00194868
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jul 11 1981 12:00AM