MANAGING THE PERFORMANCE OF JUNCTIONS IN AN URBAN AREA

This paper deals with various traffic control matters at junctions rather than the traffic management and highway planning matters affecting the roads between junctions. Low-cost systems used to improve the network performance within the Greater Nottingham area are highlighted. Factors affecting network development are discussed and an illustration is given of how a centralised urban traffic control system can be considered as the base from which technical adjustments are made. The functions of traffic control in Nottinghamshire, using TRANSYT as a basis for the optimisation of some 200 signal timings to deal with predicted traffic conditions such as those at morning and evening peaks, are considered. An example is given of the use of staggered inter-green periods at a junction; this facility is now standard at new junctions throughout the county. The design of a high capacity signal controlled three-arm roundabout with 100 per cent progression at interval stop lines for circulating flows is described. The total green time of 73 seconds for entering traffic is considerably greater than the signal cycle time. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00203505
• Corporate Authors:

  Institution of Municipal Engineers

  25 Eccleston Square
  London SW1 V1NX,   England 
• Authors:
  • Jamieson, B
  • REID, D A
• Publication Date: 1982-3

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 50-56
• Serial:
  • Chartered Municipal Engineer
  • Volume: 109
  • Issue Number: 3
  • Publisher: Institution of Municipal Engineers
  • ISSN: 0020-3505

Subject/Index Terms

• TRT Terms: Area traffic signal control; Computer programs; Costs; Digital computers; Economic efficiency; Green interval (Traffic signal cycle); Improvements; Intersections; Optimization; Peak hour traffic; Peak periods; Roundabouts; Signalized intersections; Traffic circles; Traffic control; Traffic signal cycle; Traffic signal timing; Traffic signals; Urban areas
• Uncontrolled Terms: Efficiency; Optimum
• Geographic Terms: United Kingdom
• ITRD Terms: 669: Area traffic control; 224: Cost; 576: Cycle (traffic signals); 8673: Digital computer; 5911: Efficiency; 599: Green light; 9108: Improvement; 455: Junction; 612: Peak hour; 438: Roundabout; 8645: Software; 654: Traffic control; 565: Traffic signal; 8119: United Kingdom; 313: Urban area
• Subject Areas: Economics; Finance; Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00361699
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Aug 30 1982 12:00AM