A PROCEDURE FOR ESTIMATING MOVEMENT CAPACITIES AT SIGNALISED PAIR INTERSECTIONS

Previous research has suggested that existing signal analysis software and guidelines are deficient in their analysis of closely-spaced, or paired,intersections. In particular, the phenomenon of downstream queues interfering with upstream movemen discharge has not been incorporated. This paper presents a methodology, which specifically takes into account the effects of blocking, for determining the capacities of movements at simple paired intersections. The underlying assumption of the model is discharge of a movement at an upstream intersection will continue saturation flow rate until a downstream queue extends back to the upstream intersection. This assumption leads to a simple graphic technique for determining movement capacities based on parameters easily measured in the field or estimated using elementary formul Many features of paired intersections,such as multiple upstream movements and multiple upstream and downstream green periods, can analysed using the model. Some results of a comparison of the mo estimates with output from a microscopic simulation program are presented. The model is also applied to a staggered T-intersecti Sydney, Australia. (a)

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 473-92

Subject/Index Terms

Filing Info

  • Accession Number: 00674573
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 0-86910-64
  • Files: ITRD,
  • Created Date: Mar 8 1995 12:00AM