THE CAPACITY OF MAJOR/MINOR JUNCTIONS

The authors briefly outline some of the main results of A study of the capacities of major/minor junctions. Tests were carried out on 37 public roads at three-arm junctions to collect data on the capacities of the right and left-turning streams of the minor road. The capacity of the right-turning major road stream was investigated on the TRRL test track at Crowthorne. Vehicles were recorded as they passed through the junction, and the counts were classified into "light" and "heavy" vehicles. Periods of queueing for the non-priority streams were also recorded. A wide range of geometric aspects of layout was investigated. In addition average approach speeds of traffic from each direction of the major road were measured for each site, and an index of bunching was established for the priority streams, again for each direction of major road travel. Regression analysis was applied to the measurements obtained and results are briefly discussed. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0860560802
• Supplemental Notes:
  • Proceedings of Seminar Q held at the PTRC Summer Annual Meeting, University of Warwick, Highway Planning and Design, July 7-10, 1980.
• Corporate Authors:

  Planning and Transport Res and Computation Co Ltd

  110 Strand
  London WC2,   England 
• Authors:
  • KIMBER, R M
  • Coombe, R D
  • BACH, M
• Publication Date: 1980

Media Info

• Features: Figures; References;
• Pagination: p. 141-151
• Serial:
  • Publication of: Planning and Transport Res and Computation Co Ltd
  • Publisher: Planning and Transport Res and Computation Co Ltd
  • ISSN: 0266450-X

Subject/Index Terms

• TRT Terms: Arterial highways; Automobiles; Bunching; Bus priority; Coefficients; Directional distribution; Heavy vehicles; Highway capacity; Intersections; Layout; Left turns; Queuing; Queuing theory; Regression analysis; Right turns; Secondary roads; Speed; Strategic planning; Test tracks; Tests; Traffic counts; Traffic signal preemption; Traffic speed; Types of traffic
• Uncontrolled Terms: Intersection capacity; Traffic direction
• Old TRIS Terms: Queueing theory
• ITRD Terms: 652: Bunching; 643: Capacity (road, footway); 1243: Car; 6410: Coefficient; 626: Direction (traffic); 455: Junction; 2885: Layout; 1236: Lorry; 2748: Main road; 648: Priority (traffic); 6594: Queue; 6588: Regression analysis; 2773: Secondary road; 5408: Speed; 6255: Test; 2789: Test track; 689: Traffic count
• Subject Areas: Data and Information Technology; Design; Highways; Operations and Traffic Management; Planning and Forecasting; Public Transportation; I21: Planning of Transport Infrastructure; I71: Traffic Theory; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00342441
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0 86056-080-2
• Report/Paper Numbers: P199
• Files: ITRD, TRIS
• Created Date: Dec 22 1981 12:00AM