The general problem discussed is the optimal addition of an internal ring road to a circular city with a circumferential ring road. It is assumed that both the origins and destinations have circular symmetry, and that speed in any direction is a function of radial position only. Routes are chosen so as to minimize journey times. For plausible models of destination distributions and speed vs. radius relationship it is shown that optimal positioning of the internal ring road is insensitive to the ratio of speed at the city center to speed at a distance infinitely far from the city center. Furthermore, the benefit in improved journey time does not depend strongly on positioning of the internal ring road. /Author/

  • Corporate Authors:

    Pergamon Press, Incorporated

    Maxwell House, Fairview Park
    Elmsford, NY  United States  10523
  • Authors:
    • Blumenfeld, D E
    • Weiss, G H
  • Publication Date: 1970-10

Media Info

  • Features: Figures; References;
  • Pagination: p. 235-42
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00291051
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: HS-700 272
  • Files: HSL, ITRD, TRIS
  • Created Date: Sep 30 1974 12:00AM