Briefly described is a freight transportation modal choice model that, because it is felt that any broad study of freight must deal with more than two modes, does assume existence of more than two possible modes. This research implies that, in order to forecast freight commodity flows accurately, it is necessary to take individual commodity characteristics such as shipment size and value into account. The type of mode chosen by a shipper will depend greatly on the commodity to be transported; in turn, this will help determine modal choice. Input-output models provide commodity-group output forecasts that can be used as a starting point to forecast demand for transportation by mode at a commodity level; an appropriate modal split algorithm can--after converting value of output to tons--estimate the tonnage carried by each mode. This methodology is preferable to more macro-related methodologies when research is focusing, for example, on the effects of energy or regulatory policies; it may be that in many cases government actions will not alter shipper choice because of a shipper's perception of transport.

Media Info

  • Media Type: Print
  • Features: References; Tables;
  • Pagination: pp 14-17
  • Monograph Title: Freight movement and demand
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00189860
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Apr 12 1979 12:00AM