AGGREGATE MODAL SPLIT MODELS: IS CURRENT UK PRACTICE WARRANTED?

Traditional aggregate modal split models have been calibrated in two complementary studies of journey-to-work trips, one of the whole of West Yorkshire, the other for one particular corridor within the county. The problems of combining different data sources, selecting the model form and choosing the calibration technique are discussed, together with a critique of the need for prior specification of certain key parameter values (e.g. Value of time) in these models. The main findings were that aggregate modal split models do not perform well, especially for large areas, and that the common practice of using area-wide models to analyse local problems should be seriously questioned. In the studies described, the county models were totally in appropriate for the corridor area. (TRRL)

  • Availability:
  • Corporate Authors:

    Printerhall Limited

    29 Newmart Street
    London W1P 3PE,   England 
  • Authors:
    • Hartley, T M
    • Ortuzar, J D
  • Publication Date: 1980-1

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  • Undetermined

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Filing Info

  • Accession Number: 00314694
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Nov 19 1980 12:00AM