FUNDAMENTAL RELATIONSHIPS FOR TRAFFIC FLOWS AT SIGNALISED INTERSECTIONS

This report presents findings of a study of fundamental traffic characteristics at signalised intersections based on surveys of queue discharge headways and speeds for individual vehicles and jam spacings at eighteen intersections in Sydney and Melbourne. Exponential queue discharge flow, headway and speed models are given. Other traffic parameters considered are spacing, gap length, density, gap time, occupancy time, space time, occupancy ratios, queue clearance wave speed, departure response time, saturation flow rate, start loss and end gain times. The report presents basic material on fundamental traffic flow relationships, describes the survey methodology, survey site characteristics, data processing, analysis method, and calibration method, and presents calibration results. Results on uninterrupted flow models and downstream queue interference at paired intersections are presented. Implications of findings on capacity and performance modelling and adaptive signal control practice are discussed. Relationships for use in practice are given. (a)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0869107968
• Corporate Authors:

  ARRB

  Melbourne, Victoria  Australia 
• Authors:
  • Akcelik, R
  • BESLEY, M
  • ROPER, R
• Publication Date: 1999-9

Language

• English

Media Info

• Features: References;
• Pagination: 194P + APPENDICES p.
• Serial:
  • Research Report
  • Issue Number: ARR 340
  • Publisher: ARRB
  • ISSN: 0158-0728

Subject/Index Terms

• TRT Terms: Calibration; Detectors; Headways; Intersections; Length; Mathematical models; Numbers; Queuing; Speed; Traffic density; Traffic flow; Traffic signals; Urban areas; Vehicle occupants; Vehicle spacing; Vehicles
• Geographic Terms: Australia
• ITRD Terms: 8006: Australia; 6171: Calibration; 685: Headway; 455: Junction; 6488: Length; 6473: Mathematical model; 6432: Number; 6594: Queue; 6120: Sensor; 5408: Speed; 673: Traffic concentration; 671: Traffic flow; 565: Traffic signal; 313: Urban area; 1255: Vehicle; 1715: Vehicle occupant; 694: Vehicle spacing
• Subject Areas: Passenger Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00793578
• Record Type: Publication
• Source Agency: ARRB
• ISBN: 0-86910-796-8
• Files: ITRD, ATRI
• Created Date: Jun 15 2000 12:00AM