MODELS FOR THE ECONOMIC EVALUATION OF ROAD MAINTENANCE. A COMMENT

The authors refer to a paper by Abelson and Flowerdew in which the economic evaluation of road maintenance strategies was discussed, and consideration given to two types of optimising models. The first is described as a dynamic programming model to determine the optimal maintenance expenditures for a given road, with the objective of minimising the present value of total vehicle operating costs plus maintenance costs. The second, as a multi-road multi-period model for optimising the allocation of road maintenance equipment and budgets among the competing maintenance needs. In discussing the paper the authors refer to the outlined use of integer programming models as a means for optimising expenditure on road maintenance, draw attention to a few important extensions to the problem, and also correct an error in one of the models. It is suggested that a potentially important cost item omitted from their discussion was the cost of delays to road users while maintenance activities are carried out. A serious shortcoming is felt to be the restriction of the first model to deterministic cost functions, deterioration rates and traffic volumes, and in an appendix to this comment a markovian decision model for optimal inspection-maintenance strategy is described. /TRRL/

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  • Corporate Authors:

    London School of Economics and Political Science

    Houghton Street, Aldwych
    London WC2A 2AE,   England 
  • Authors:
    • Gerchak, Y
    • Waters, W G
  • Publication Date: 1978-1

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Filing Info

  • Accession Number: 00178636
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Sep 27 1978 12:00AM