A highway transportation planning framework developed at M.I.T., the Road Investment analysis Model (RIAM), has been applied to the analysis and planning of highway investment decisions in Egypt. Ten alternative maintenance policies were analyzed over the network study zone, reflecting three types of investment concerns important to the Egyptian Transport Planning Authority. Among the questions addressed were: (1) the relative frequency of the maintenance activities; (2) the relative magnitude of the investments as reflected in the overlay thickness; and (3) the relative levels of investment among the three road classes-primary-secondary, and tertiary-to achieve the most effective overall investment strategy in the network. Additionally, the heavier the level of investment, the greater was the economic return from that investment, the greater was the economic return from that investment, given that the investment was distributed fairly evenly among the various road classes. The optimum alternative identified was found to consist of frequent, light overlays on the secondary and tertiary systems (where additional structural strength is needed to meet future traffic demands). These results held true whether the performance was judged on economic efficiency or user satisfaction (consumer surplus). /Authors/

Media Info

  • Media Type: Print
  • Features: Appendices; Photos; Tables;
  • Pagination: pp 229-237
  • Monograph Title: Low volume roads: second international conference; proceedings, August 20-23, 1979
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00301122
  • Record Type: Publication
  • ISBN: 309028434
  • Files: TRIS, TRB
  • Created Date: Oct 17 1979 12:00AM