PREDICTING AREA TRAFFIC CONTROL PERFORMANCE WITH TRANSYT/8 AND AN ELEMENTAL MODEL OF FUEL CONSUMPTION

The traffic model of TRANSYT/8 is used to predict the journey time and number of stops in an area traffic control network. It is used to simulate the operation of the fixed- time (t) and isolated (i) control modes. The traffic flow and timing plans are identical to those employed in the Parramatta floating-car survey. The shared stop-line facility of TRANSYT is utilised to model traffic movements in more detail. The results previously obtained in the survey are used for comparison with the model predictions. It is found that TRANSTY/8 overestimates the journey time and stops in absolute values for both modes. However, the measured and predicted t/i comparison results differ by only 1 per cent in both journey time and number of stops when averaged over three time periods. An elemental model of fuel consumption is used to combine the total journey time and total stops to produce estimates of fuel consumption for two sub-areas of the Parramatta network, namely, the central business district and the Great Western Highway. A description of the experimental procedure to calibrate the parameters of the fuel consumption model is given. Based on measured journey time and stops, the elemental model is found to underestimate absolute levels of fuel consumption but to be accurate in predicting changes in fuel consumption. The underestimation in absolute levels of fuel consumption is 1 to 16 per cent, but the predicted differences are within 1 to 8 per cent of the measured differences. The absence of modelling detailed driving behaviour affects the model accuracy. The predictions are found to be sensitive to the cruise speed adopted. The number of the covering abstract for the conference is TRIS No. 393385. (Author/TRRL)

• Record URL:
  http://arrbknowledge.com
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00050164
• Supplemental Notes:
  • This paper was presented during the 12th Australian Road Research Board Conference, Hobart, Tasmania, 27-31 August 1984.
• Corporate Authors:

  ARRB

  Melbourne, Victoria  Australia 
• Authors:
  • Luk, JYK
  • Akcelik, R
• Publication Date: 1984

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 87-101
• Serial:
  • Australian Road Research
  • Volume: 12
  • Issue Number: 4
  • Publisher: ARRB
  • ISSN: 0005-0164

Subject/Index Terms

• TRT Terms: Accuracy; Area traffic signal control; Behavior; Conferences; Drivers; Estimating; Evaluation and assessment; Forecasting; Fuel consumption; Mathematical models; Solar energy; Solar power generation; Speed; Traffic control; Traffic delays; Traffic flow; Traffic signal control systems; Traffic signal timing; Traffic simulation; Travel time; Trip length; Urban areas
• Geographic Terms: Australia
• ITRD Terms: 669: Area traffic control; 8006: Australia; 8525: Conference; 9010: Delay; 9020: Evaluation (assessment); 132: Forecast; 232: Fuel consumption; 697: Journey time; 597: Linked signals; 6473: Mathematical model; 5408: Speed; 671: Traffic flow; 313: Urban area
• Subject Areas: Energy; Highways; Operations and Traffic Management; I71: Traffic Theory; I73: Traffic Control;

Filing Info

• Accession Number: 00393447
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, TRIS, ATRI
• Created Date: Jun 30 1985 12:00AM