THEORETICAL APPLICATION OF A GRAVITY MODEL TO TRAVEL IN A CIRCULAR TOWN

THE VARIATION WITH POSITION OF THE NUMBER AND LENGTH OF TRIPS GENERATED IN A UNIFORM CIRCULAR TOWN IS FOUND, ON THE ASSUMPTION THAT THE GENERALISED COSTS OF TRAVEL PER DAY FOR EACH PERSON ARE CONSTANT AND THAT THE DETERRENT EFFECT OF SEPARATION VARIES INVERSELY AS THE SEPARATION. IT IS SHOWN THAT THE AVERAGE TRIP LENGTH IS 35 PER CENT LESS THAN THAT FOR A RANDOM COUPLING OF ORIGINS AND DESTINATIONS IN A UNIFORM CIRCULAR TOWN. THE BIAS THAT MIGHT RESULT FROM USING AN APPROXIMATE METHOD TO CALIBRATE A GRAVITY MODEL IS ALSO INVESTIGATED, BY APPLYING THE APPROXIMATE METHOD TO THE THEORETICAL SITUATION DESCRIBED IN THIS NOTE. /AUTHOR/

• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • KIRBY, H R
• Publication Date: 1974

Language

• English

Media Info

• Features: Figures; References;
• Pagination: 16 p.

Subject/Index Terms

• TRT Terms: Circles; Costs; Gravity models; Length; Methodology; Origin and destination; Travel; Trip generation; Trip length; Urban areas
• ITRD Terms: 6423: Circle; 224: Cost; 663: Generated traffic; 690: Gravity model; 698: Journey; 6488: Length; 687: Origin destination traffic; 313: Urban area
• Subject Areas: Finance; Highways; Operations and Traffic Management; Planning and Forecasting; I71: Traffic Theory;

Filing Info

• Accession Number: 00080589
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: No. SR 13UC Series
• Files: ITRD, TRIS
• Created Date: Mar 26 1975 12:00AM