Details are given of the QUADRO model which applies the total cost concept to economic appraisals and provides estimates of the extra road user costs which might be incurred given certain assumptions concerning the work site and the traffic. The paper describes QUADRO (queues and delays at roadworks) which models a simple network consisting of a main route containing the roadworks site and a single alternative route around the works. In addition to the extra road user costs (expressed in delay terms), the FORTRAN program evaluates the additional delays caused by vehicle breakdowns within the site as a second stage in the computations. The model input and output are described together with the application of the model. (TRRL)

  • Availability:
  • Supplemental Notes:
    • Highway Construction and Maintenance, Proceedings of Seminar P, held at the PTRC Summer Annual Meeting.
  • Corporate Authors:

    Planning and Transport Res and Computation Co Ltd

    109 Bedford Chambers, 4 King Street
    London,   England 
  • Authors:
    • MATHEWS, D H
    • Baguley, P C
  • Conference:
  • Publication Date: 1979

Media Info

  • Features: Figures; References;
  • Pagination: p. 169-179
  • Serial:
    • Issue Number: P185

Subject/Index Terms

Filing Info

  • Accession Number: 00324956
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 086050-066-7
  • Report/Paper Numbers: Monograph
  • Files: ITRD, TRIS
  • Created Date: May 21 1981 12:00AM