THE CONTRIBUTION TO THE PROCEDURE OF CAPACITY DETERMINATION AT UNSIGNALIZED PRIORITY-CONTROLLED INTERSECTIONS

The problem of minor vehicles crossing or merging into the major stream at unsignalized priority-controlled intersections is well-known. This article discusses the procedure of capacity determination at these unsignalized priority-controlled intersections. The author differentiates two main groups of intersections: those with two streams (one major, one minor) and those with more than two streams. Topics include the formulas used to estimate capacity, assumption modeling, and single-lane roundabouts. The author treats single-lane roundabouts as unsignalized priority-controlled intersections because the vehicles at the roundabout approach have to five way to the pedestrians and cyclists (first major lane), and because the minor stream at the entrance has to give way to the major stream at the circulation lane (second major lane). The author concludes that Hagring's generalized formula for the capacity of minor road movement at unsignalized priority-controlled intersections with more than one major lane is the most appropriate to use for determining roundabout capacity. However, this formula needs to be calibrated with measurements determined under actual conditions.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03535320
• Corporate Authors:

  University of Zagreb

  Faculty of Transport and Traffic Sciences
  10000 Zagreb,   Croatia 
• Authors:
  • Tolazzi, T
• Publication Date: 2004

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 31-36
• Serial:
  • Promet Traffic-Traffico
  • Volume: 16
  • Issue Number: 1
  • Publisher: University of Zagreb
  • ISSN: 0353-5320

Subject/Index Terms

• TRT Terms: Equations; Highway capacity; Roundabouts; Single lane traffic; Traffic circles; Traffic control; Traffic estimation; Traffic lanes; Unsignalized intersections
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00987552
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 28 2005 12:00AM