PARAMETER ESTIMATION OF THE SIMULTANEOUS TRANSPORT DEMAND MODEL

HET SCHATTEN VAN COEFFICIENTEN IN HET SIMULTANE VERKEERSMODEL

The parameters of the trip distribution and modal split functions of the transport demand model are often estimated independently. There are a number of theoretical and practical objections to this practice. The most important practical drawback concerns the travel impedance: this explanatory variable cannot be estimated accurately enough. In some cases this drawback is also pertinent to conditional probability models. In order to eliminate these objections the simultaneous estimation model has been developed. With this model the parameters of the simultaneous transport demand model are estimated. The estimation model is derived from Fisher's likelihood estimation model which is based on probability theory. Parameter estimation requires availablaity of o-d trip matrices by mode and o-d impedance matrices by mode. In principle it is possible to treat excess and egress travel impedances as separate explanatory variables. The covering abstract for the conference is IRRD no. 213390. /TRRL/

• Corporate Authors:

  Colloguium Vervoersplanologisch Speurwerk

  P.O. Box 45
  Delft,   Netherlands 
• Authors:
  • Hamerslag, R
• Publication Date: 1974

Language

• Dutch

Media Info

• Features: Figures; References;
• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Calibration; Demand; Estimating; Forecasting; Mathematical models; Modal split; Origin and destination; Probability; Probability theory; Traffic assignment; Traffic engineering; Transportation; Travel; Travel demand
• Uncontrolled Terms: Parameters; Transportation models
• ITRD Terms: 6171: Calibration; 285: Demand (econ); 132: Forecast; 698: Journey; 6473: Mathematical model; 675: Modal split; 1054: Network (traffic); 687: Origin destination traffic; 6534: Probability; 655: Traffic engineering
• Subject Areas: Operations and Traffic Management; Transportation (General); I71: Traffic Theory;

Filing Info

• Accession Number: 00129531
• Record Type: Publication
• Source Agency: Institute for Road Safety Research, SWOV
• Report/Paper Numbers: Conf Paper
• Files: ITRD, TRIS
• Created Date: Mar 29 1976 12:00AM