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VEHICLE SPEEDS AND OPERATING COSTS: MODELS FOR ROAD PLANNING AND MANAGEMENT

The World Bank initiated a study, the Highway Design and Maintenance Standards Study (HDM), in 1969 that later became a large-scale program of collaborative research with leading research institutions and road agencies in several countries. This study focused both on the rigorous empirical quantification of the tradeoffs between the costs of road construction, road maintenance, and vehicle operation and on the development of planning models incorporating total life-cycle cost simulation as a basis for highway decision making. This volume is one in a series of five that documents the results of the HDM Study. This volume takes an aggregate-mechanistic view of vehicle speed and operating costs under free flow conditions. Basing their analysis on the mechanistic principles of propulsion and motion as well as on postulated assumptions of driver behavior, the authors arrive at predictions at three levels of detail, ranging from a simulation method for use in detailed geometric design at the link level to an aggregate method for use in investment planning at the sectoral level. The models were estimated using the comprehensive data base collected in the Brazil-UNDP-World Bank highway research project and were validated along with data sets from India. One of the significant contributions to highway economics research made in this study is the probabilistic limiting velocity approach to steady-state speed prediction, which, combined with the aggregate-mechanistic methodology, will provide a possible basis for future research on the far more complex problem of operating costs under congested conditions. Although the relationships described in this volume form part of the HDM-III model, they can also be used on their own.

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  • Supplemental Notes:
    • This document was published for The World Bank by Johns Hopkins University Press, Baltimore, Maryland 21211. Other volumes in this series are: Vehicle Operating Costs: Evidence from Developing Countries; Road Deterioration and Maintenance Effects: Models for Planning and Management; and The Highway Design and Maintenance Standards Model: Volume 1: Description of the HDM-III Model and Volume 2: Users' Manual for the HDM-III Model.
  • Corporate Authors:

    World Bank

    1818 H Street, NW
    Washington, DC  United States  20433
  • Authors:
    • Watanatada, T
    • Dhareshwar, A M
    • Lima, PRSR
  • Publication Date: 1987-12

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Filing Info

  • Accession Number: 00603272
  • Record Type: Publication
  • ISBN: 0-8018-3589-5
  • Files: TRIS
  • Created Date: Jan 31 1991 12:00AM