TRANSPORTATION MODEL WITH ELASTIC CONSTRAINTS

DE WEDERZIJDSE AFHANKELIJKHEID VAN VERVOERVRAAG, DE GEOGRAFISCHE SPREIDING VAN BEVOLKING EN ARBEIDSPLAATSEN EN HET VERVOERSTELSLEEN DIRECT VRAAGMODEL MET GEGEVEN KWALITEIT VAN HET VERVOERSTELSEL

A model is presented dealing with the relationship between transportation flows, location of population and employment and the transportation system. This model is to be seen as a generalisation of the conventional singly or doubly constrained transportation models, as it has so-called elastic constraints. It is argued that these conventional transportation models can only be applied if the activity pattern can be forecast in equilibrium with the transportation system. Otherwise transportation flows result that cannot be dealt with by the assumed transportation system. This condition is seldom met. In the proposed model transportation demand, location of population and employments is determined simultaneously. The model has A static as well as a dynamic version. It is shown that the static version is very sensitive to changes of the elasticities of the constraints. Application of the dynamic model to a hypothetical situation demonstrated the resulting transportation flows and activity pattern to be highly sensitive to changes in travel impedances. The results of the sensitivity study appeared reasonable. (a) the covering abstract for the conference is IRRD no. 215277. /TRRL/

  • Corporate Authors:

    Colloguium Vervoersplanologisch Speurwerk

    P.O. Box 45
    Delft,   Netherlands 
  • Authors:
    • Hamerslag, R
  • Publication Date: 1975

Language

  • Dutch

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00132346
  • Record Type: Publication
  • Source Agency: Institute for Road Safety Research, SWOV
  • Report/Paper Numbers: Conf Paper
  • Files: ITRD, TRIS
  • Created Date: Jun 23 1976 12:00AM