This paper presents the preliminary stages of work which is aimed at providing junction flow/delay relationships which cover flow levels up to and over capacity. Time-dependent queueing theory, with simplifying assumptions regarding input flow patterns, has been used to generate flow/delay relationships which have then been compared with measurements of delays suffered by minor road vehicles at major/minor priority junctions. The agreement between the theory and the observations is reasonable. The calculated flow/delay relationships are defined by parameters which relate only to the broad features of the traffic demand/capacity interaction. These parameters are the traffic intensity rho, the capacity mu, and the characteristic block time t of the demand flow; each can be calculated or estimated from basic traffic data. The results obtained so far are sufficiently encouraging for the concepts outlined in this paper to be developed further. /Author/TRRL/

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  • Corporate Authors:

    Printerhall Limited

    29 Newmart Street
    London W1P 3PE,   England 
  • Authors:
    • KIMBER, R M
    • Hollis, E M
  • Publication Date: 1977-11

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Filing Info

  • Accession Number: 00174096
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Analytic
  • Files: ITRD, TRIS
  • Created Date: Jul 19 1978 12:00AM