MODAL SPLIT AND THE VALUE OF TIME--THE INTERPRETATION OF DIFFERENT VARIABLE FORMS

THIS NOTE CONSIDERS VARIOUS ALTERNATIVE FORMS FOR JOURNEY TIMES AND JOURNEY COSTS THAT HAVE BEEN EMPLOYED IN VARIOUS STUDIES OF THE CHOICE OF TRAVEL MODE, NOT FROM THE POINT OF VIEW OF THEIR EMPIRICAL VALUE, BUT FROM THAT OF THE PROBLEMS THEY IMPOSE IN DETERMINING THE VALUES PLACED ON TIME. THE METHOD USED IS THE DIFFERENTIAL CALCULUS. THE NOTE COVERS BOTH THE CASE WHERE JOURNEY TIME AND JOURNEY COSTS ARE CORRELATED, AND WHEN THEY ARE NOT. THE PARTICULAR VARIABLE FORMS DISCUSSED ARE: (1) ABSOLUTE TIME AND COST CONFIGURATION BY EACH MODE, (2) DIFFERENCES IN JOURNEY TIME AND JOURNEY COST BETWEEN MODES, (3) RATIOS OF JOURNEY TIME BY ONE MODE TO THAT BY THE OTHER, AND SIMILARLY FOR COST, (4) RATIO OF THE DIFFERENCE IN JOURNEY TIME BETWEEN MODES TO THE AVERAGE ELAPSED TIME (OR EXPECTED TIME), AND SIMILARLY FOR COST, AND (5) LOGARITHMIC FORMS OF THESE VARIABLES. ALSO IRRD ABSTRACT NO 203623.

  • Corporate Authors:

    Department of The Environment /UK

    /Highway Economics Unit
    ,   United States 
  • Authors:
    • Mansfield, N W
  • Publication Date: 1970-11

Media Info

  • Features: References;
  • Pagination: 13 p.
  • Serial:
    • Issue Number: 18

Subject/Index Terms

Filing Info

  • Accession Number: 00228520
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: R & D Rpt
  • Files: TRIS
  • Created Date: Feb 1 1974 12:00AM