MATRIX ENTRY ESTIMATION ERRORS

Estimation of trip tables or other matrices is often a first step in transportation systems analysis, but such estimates are typically uncertain. The authors discuss the various errors which can arise in estimation using the framework provided by constrained, generalized least squares regression. An advantage of this approach is that error estimates can be calculated. Incremental sampling strategies and the use of different types of information are introduced as means to reduce estimate uncertainty. Illustrative applications are made to ab initio estimation of inter-zonal work trips in a metropolitan area and to expansion of a work trip matrix to a full trip table for a transit service. (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:
  • Hendrickson, C
  • McNeil, S
• 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. 413-430

Subject/Index Terms

• TRT Terms: Calculation; Conferences; Errors; Forecasting; Least squares method; Mathematical matrices; Mathematical models; Metropolitan areas; Networks; Origin and destination; Planning; Public transit; Sampling; Systems analysis; Traffic flow; Transportation; Travel; Uncertainty; Work trips
• Uncontrolled Terms: Transportation networks; Trip
• Old TRIS Terms: Transportation system analysis
• ITRD Terms: 6464: Calculation; 8525: Conference; 6440: Error; 132: Forecast; 698: Journey; 6473: Mathematical model; 6494: Matrix; 1054: Network (traffic); 687: Origin destination traffic; 143: Planning; 671: Traffic flow; 1155: Transport
• Subject Areas: Operations and Traffic Management; Planning and Forecasting; Transportation (General); I71: Traffic Theory;

Filing Info

• Accession Number: 00392094
• 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