The authors review current studies conducted for defining the relations between vehicle journey time, traffic flow and road characteristics. Particular mention is made of the need of calculating mean yearly values if economic calculations are to be made. The studies carried out are based on experimental measurements of high traffic flows, available statistics, and, in particular, on permanent annual traffic counts. The processing of the data collected, which is mostly carried out statistically, is not yet completed, but some results are presented in the form of relations. The saturation problem is extremely difficult to solve, and an empirical approach had to be used, as there were not sufficient data to explain the corresponding phenomena. /TRRL/

  • Corporate Authors:

    Revue Generale des Routes

    9 rue Magellon
    Paris,   France 
  • Authors:
    • Deterne, M
    • Lebreton
  • Publication Date: 1975-10


  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00159839
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Analytic
  • Files: ITRD, TRIS
  • Created Date: Feb 16 1978 12:00AM