A METHOD FOR UPDATING EXISTING DATA BASES OF AN ORIGIN-DESTINATION TRAFFIC MATRIX

The updating of existing origin-destination traffic surveys represents a big problem. Methods are lacking to follow up these surveys made with great expenditure of time and money by means of minor sample traffic surveys of the travel behaviour and traffic counts. The present report describes such an estimating method. According to the "principle of minimum gain of information" an origin-destination traffic matrix obtained some years ago can be updated and calibrated at small costs with the aid of actual sample traffic surveys. It is possible to incorporate in this estimation the distribution models of the modal split and the traffic assignment. The method is described in detail. All information available from traffic counts, behaviour studies on the mobility, the modal choice and the routing split are considered in the estimation. With the use of the respective distribution models the latter information can be incorporated in the estimation. The estimation itself is not based on empirical data: it is a mathematical-statistical method satisfying the actual information on the travel behaviour as limit conditions and choosing the "most probable solution" from that limited margin of solutions. The method has been successfully used in the practice. (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:
  • Sammer, G
  • Zelle, K
• Conference:
  • Planning & Transport Res & Comp, Sum Ann Mtg, Proc
• Publication Date: 1982

Media Info

• Features: Figures; References;
• Pagination: p. 325-332

Subject/Index Terms

• TRT Terms: Calibration; Conferences; Databases; Evaluation and assessment; Itinerary; Mathematical models; Matrices (Mathematics); Mobility; Modal split; Origin and destination; Traffic assignment; Traffic counts; Traffic distribution; Traffic surveys; Transportation
• Uncontrolled Terms: Models; Modifications; Selection
• Old TRIS Terms: Update
• ITRD Terms: 6171: Calibration; 8525: Conference; 9020: Evaluation (assessment); 699: Itinerary; 6473: Mathematical model; 9105: Mobility (pers); 675: Modal split; 9048: Modification; 687: Origin destination traffic; 9072: Selection; 679: Traffic assignment; 689: Traffic count; 676: Traffic survey
• Subject Areas: Operations and Traffic Management; Planning and Forecasting; Transportation (General); I71: Traffic Theory;

Filing Info

• Accession Number: 00381642
• 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