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Comment on “The Development of a New Gravity—Opportunity Model for Trip Distributionâ€

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  • J R Roy

    (Commonwealth Scientific and Industrial Research Organisation, Division of Building, Construction and Engineering, PO Box 56, Highett, Victoria, 3190, Australia)

Abstract

The integration of the gravity and intervening-opportunities model in the recent paper by Gonçalves and Ulysséa-Neto provokes interesting questions on the role of the number of intervening opportunities on either decreasing or increasing travel. In this note I discuss such issues, as well as making comparisons with recent innovations in spatial interaction theory.

Suggested Citation

  • J R Roy, 1993. "Comment on “The Development of a New Gravity—Opportunity Model for Trip Distributionâ€," Environment and Planning A, , vol. 25(11), pages 1689-1691, November.
    • Handle: RePEc:sae:envira:v:25:y:1993:i:11:p:1689-1691
    DOI: 10.1068/a251689
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