THE SENSITIVITY OF TRIP GENERATION FORECASTS TO PLANNING INPUTS

Trip generation equations for the daily number of trips produced by households in the Reading area in 1971 have been combined with a regression equation for the distribution of household car ownership to examine the sensitivity of trip forecasts to changes in car ownership and other planning variables. For the four trip types investigated - all home-based trips by all modes and by vehicle, and work and school trips by vehicle - the results showed that it was more important to estimate population accurately than car ownership. /Author/TRRL/

• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • Fawcett, F
  • Downes, J D
• Publication Date: 1978

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 18 p.

Subject/Index Terms

• TRT Terms: Days; Forecasting; Households; Mathematical models; Motor vehicles; Ownership; Planning; Population; Regression analysis; Schools; Sensitivity; Stresses; Travel; Trip generation; Work trips
• Uncontrolled Terms: Triaxial stress
• Geographic Terms: United Kingdom
• ITRD Terms: 8006: Australia; 4318: Catchment area (hydrol); 9007: Day (24 hour period); 9011: Design (overall design); 4323: Discharge (flow); 2569: Flooding; 132: Forecast; 663: Generated traffic; 309: Household; 4332: Hydrology; 698: Journey; 621: Journey to work; 356: Land use; 6473: Mathematical model; 9102: Method; 143: Planning; 335: Population; 2507: Rain; 6588: Regression analysis; 4329: Run off; 101: School; 8597: Thesis; 8119: United Kingdom; 315: Vehicle ownership
• Subject Areas: Data and Information Technology; Education and Training; Highways; Operations and Traffic Management; Planning and Forecasting; Society; I71: Traffic Theory; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00183399
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: TRRL SR 389 Monograph
• Files: ITRD, TRIS, ATRI
• Created Date: Dec 29 1978 12:00AM