The deterioration characteristics of roads and the ways in which these characteristics depend on the original design and construction standard, the natural environment, and the traffic loading were studied. Relationships were derived between the above variables and were esxpressed in a form suitable for use in a computer model. The effects of different maintenance policies on the deterioration of roads was also investigated. Details are given of the design of the experiments, the materials investigation, the traffic measurements, and road performance measurements. Experimental results (for paved and unpaved roads) are analyzed and the conclusions are presented. The model described here allows the calculation of the total costs (construction, maintenance, and vehicle operation) of a road project over a chosen design life and the study of the way these costs depend on road geometry, maintenance policy and construction standard. The lowest cost design will depend on many factors, the chief of which are traffic loading, traffic composition, design life, ground profile, location of road building materials, type of terrain and climatic conditions.

  • Supplemental Notes:
    • Proceedings of the Seminar on Highway Design in Developing Countries held during the PTRC Summer Annual Meeting 10-11 July 1975 at the University of Warwick, England.
  • Corporate Authors:

    Planning and Transport Res and Computation Co Ltd

    167 Oxford Street
    London W1R 1AH,   England 
  • Authors:
    • ROLT, J
  • Conference:
  • Publication Date: 1975-7

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 49-84
  • Serial:
    • Issue Number: 5

Subject/Index Terms

Filing Info

  • Accession Number: 00144038
  • Record Type: Publication
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Dec 22 1976 12:00AM