The transport network optimization problem is stated in general terms. Generally speaking in a transport network problem those values for the dimensions of the links (e.g. the numbers of lanes for the roads of a road network) and/or for the traffic on the links which optimize the objective function are investigated. Some possible and acceptable objective functions are discussed, such as the minimization of the total social costs for a given trip- matrix and the maximization of the total social net benefit. Finally, the fundamental constraints on the optimization are mentioned together with other possible constraints. This paper is a reprint of Chapter 3 of: Steenbrink, P.A. "Optimization of Transport Networoks". London John Wiley, 1974. Copyright by John Wiley. /TRRL/ injury types, results were similar for unrestrained and lap belted drivers. Recorded were decrease in injury risk of head injury and no influence on thorax injury risk. Some of the safety modifications have been effective in reducing occupant injury risk. The influence of the EA system on head and chest injury indicates the need for good injury data and detailed accident information for this type of analysis. /Author/

  • Corporate Authors:

    Colloguium Vervoersplanologisch Speurwerk

    P.O. Box 45
    Delft,   Netherlands 
  • Authors:
    • Steernbrink, P A
  • Publication Date: 1974

Media Info

  • Features: Figures; References;
  • Pagination: 8 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00126085
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Conf Paper
  • Files: ITRD, TRIS
  • Created Date: May 14 1976 12:00AM