ESTIMATION OF O-D FLOWS FROM TRAFFIC COUNT AND LICENSE-PLATE SURVEY INFORMATION

The design of traffic management schemes usually requires knowledge of the pattern of trips on the system under scrutiny. This pattern is ordinarily described by an o-d flow matrix. One of the common tasks of this type is the estimation of flows between the intersection approaches on a stretch of road. Estimation is based on intersection flow counts which are supplemented by a sample license-plate survey. In this paper a procedure is developed to obtain the most likely o-d flow estimates using both intersection counts and results of the sample license-plate survey. This procedure ensures that best use is made of available data. The procedure is illustrated in detail on the basis of a numerical example. An earlier paper reported a method of estimation which relies on intersection counts only and does not require the conduct of a sample license-plate survey. It is therefore important to examine how the estimation accuracy increases when the added information from the license-plate survey is used and in particular, how accuracy increases with sample size. This is done on the basis of empirical data for a road section in Toronto. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0860501132
• Supplemental Notes:
  • This paper was presented during the proceedings of Seminar Q held at PTRC's 10th Annual Summer Meeting, Transportation Analysis and Models, Warwick University, England.
• Corporate Authors:

  PTRC Education and Research Services Limited

  110 Strand
  London WC2,   England 
• Authors:
  • Geva, I
  • Hauer, E
  • Landau, U
• Conference:
  • Planning & Transport Res & Comp, Sum Ann Mtg, Proc
• Publication Date: 1982

Media Info

• Features: Figures; References;
• Pagination: p. 333-342

Subject/Index Terms

• TRT Terms: Conferences; Errors; Highway traffic control; Intersections; License plates; Mathematical models; Origin and destination; Traffic counts; Traffic flow; Traffic surveys; Travel patterns
• Geographic Terms: Canada
• ITRD Terms: 8018: Canada; 8525: Conference; 6440: Error; 455: Junction; 6473: Mathematical model; 1346: Number plate; 687: Origin destination traffic; 689: Traffic count; 671: Traffic flow; 676: Traffic survey
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; I71: Traffic Theory; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00381643
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-86050-113-2
• Report/Paper Numbers: REPORT
• Files: ITRD, TRIS
• Created Date: Apr 30 1984 12:00AM