NATIONAL MODEL OF LONG DISTANCE TRIP MOVEMENTS

The development of the national model of long distance trip movements followed the recommendations of the SACTRA report on the RHTM project (1979). The scale and detail of the model closely resembled the major recommendations contained in that report. The size of the national matrix was reduced from over 13 million cells to less than 1 million cells using hierarchical techniques in calibration, and for forecasting this is reduced to one-quarter million cells. Prior to calibration the RHTM traffic survey data was updated and compatibility between the home interview and roadside interview data improved. The gravity model was successfully calibrated in synthetic trip end mode utilising generalised cost as the measure of special separation, with separate deterence functions for area type (rural, urban, metropolitan) and trip movement type (within towns and between towns). Preliminary validation tests indicated the model should be able to forecast traffic in the unobserved areas satisfactorily. (Author/TRRL)

  • Availability:
  • Supplemental Notes:
    • This paper was presented during the proceedings of Seminar Q held at PTRC's 10th Annual Summer Meeting, Transportation Analysis and Models, Warwick University, England.
  • Corporate Authors:

    PTRC Education and Research Services Limited

    110 Strand
    London WC2,   England 
  • Authors:
    • OUTRAM, V E
  • Conference:
  • Publication Date: 1982

Media Info

  • Features: Figures;
  • Pagination: p. 229-243

Subject/Index Terms

Filing Info

  • Accession Number: 00381635
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-86050-113-2
  • Report/Paper Numbers: REPORT
  • Files: ITRD, TRIS
  • Created Date: Apr 30 1984 12:00AM