NATIONAL MODEL OF LONG DISTANCE TRIP MOVEMENTS
The development of the national model of long distance trip movements followed the recommendations of the SACTRA report on the RHTM project (1979). The scale and detail of the model closely resembled the major recommendations contained in that report. The size of the national matrix was reduced from over 13 million cells to less than 1 million cells using hierarchical techniques in calibration, and for forecasting this is reduced to one-quarter million cells. Prior to calibration the RHTM traffic survey data was updated and compatibility between the home interview and roadside interview data improved. The gravity model was successfully calibrated in synthetic trip end mode utilising generalised cost as the measure of special separation, with separate deterence functions for area type (rural, urban, metropolitan) and trip movement type (within towns and between towns). Preliminary validation tests indicated the model should be able to forecast traffic in the unobserved areas satisfactorily. (Author/TRRL)
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0860501132
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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.
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Corporate Authors:
PTRC Education and Research Services Limited
110 Strand
London WC2, England -
Authors:
- OUTRAM, V E
- Conference:
- Publication Date: 1982
Media Info
- Features: Figures;
- Pagination: p. 229-243
Subject/Index Terms
- TRT Terms: Calibration; Conferences; Costs; Forecasting; Gravity models; Intercity transportation; Intercity travel; Mathematical models; Questionnaires; Rural areas; Traffic; Traffic forecasting; Traffic surveys; Transportation modes; Travel; Urban areas; Urban transportation
- Uncontrolled Terms: Long distance travel
- ITRD Terms: 6171: Calibration; 8525: Conference; 224: Cost; 132: Forecast; 690: Gravity model; 388: Inter urban; 9147: Interview; 698: Journey; 6473: Mathematical model; 328: Rural area; 755: Traffic; 676: Traffic survey; 1145: Transport mode; 313: Urban area
- Subject Areas: Finance; Highways; Operations and Traffic Management; Planning and Forecasting; I71: Traffic Theory; I72: Traffic and Transport Planning;
Filing Info
- Accession Number: 00381635
- 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