STUDY AND NUMERICAL MODELLING OF NON-STATIONARY TRAFFIC FLOW DEMANDS AT SIGNALIZED INTERSECTIONS

Empirical studies of traffic flow variations and theoretical analyses have been conducted in order to derive characteristics of traffic flow variability, particularly in relation to peak periods. The length of flow counting interval, t-r, as well as profiles of flow rate variations for peak periods have been determined. The flow profiles are based on a time scale divided into units t-r, within which demand flow is assumed as stationary. A computer simulation program has been developed for modelling of traffic flow with varying flow rates accordingly to an assumed curve. This program simulates the vehicle arrival process at an approach to fixed time traffic signals and calculates delays, stops, queue lengths, saturation ratios and their probalistic statistics, which charaterize level of service in the considered period of time. The primary application of this program lies in a simulation study of the effect of flow rate variability on the effectiveness of signal settings and estimation of traffic conditions during peak periods. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9067640085
• Supplemental Notes:
  • Papers presented during the Ninth International Symposium on Transportation and Traffic Theory held in Delft the Netherlands, 11-13 July 1984.
• Corporate Authors:

  VNU Science Pres BV

  P.O. Box 2073
  Utrecht,   Netherlands 
• Authors:
  • Chodur, J
  • Tracz, M
• Conference:
  • Papers presented during the Ninth International Symposium on Transportation and Traffic Theory held in Delft the Netherlands, 11-13 July 1984.
• Publication Date: 1984

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 134-154

Subject/Index Terms

• TRT Terms: Computer programs; Conferences; Demand; Intersections; Mathematical models; Peak hour traffic; Peak periods; Queuing; Signalized intersections; Simulation; Traffic congestion; Traffic delays; Traffic flow; Traffic signal timing; Traffic signals; Traffic simulation
• ITRD Terms: 8525: Conference; 632: Congestion (traffic); 9010: Delay; 285: Demand (econ); 455: Junction; 6473: Mathematical model; 612: Peak hour; 6594: Queue; 9103: Simulation; 8645: Software; 671: Traffic flow; 565: Traffic signal
• Subject Areas: Highways; Operations and Traffic Management; I71: Traffic Theory;

Filing Info

• Accession Number: 00392081
• Record Type: Publication
• Source Agency: Institute for Road Safety Research, SWOV
• ISBN: 90-6764-008-5
• Files: ITRD, TRIS
• Created Date: Apr 29 1985 12:00AM