SIDRA-2 DOES IT LANE BY LANE

SIDRA-2 has been developed as a computer program to aid traffic engineers and researchers in the design and analysis of signalised intersections. SIDRA-2 implements the techniques described in the ARRB Research Report ARR No. 123 (Traffic Signals: Capacity and Timing Analysis). Although the fundamental principles and methods are the same, there are some important differences between ARR No. 123 and SIDRA-2. The most important is the lane-by-lane calculation of capacities and operating characteristics such as delay, number of stops and queue length. This paper outlines the main features of SIDRA-2 and discusses various aspects of the new method of lane-by-lane calculations. The "lane interaction" and "opposed turn" models are described briefly. Lane-by-lane calculations allow for predictions. The use of the "opposed turn equivalents" operating characteristics. This also improves the capacity predictions. The use of the 'opposed turn equivalents' e(sub o) and other movement saturation flow adjustments, eg, for lane under-utilisation, are no longer necessary. The paper discusses a problem in the theory of signal design which is related to the application of the formulae for delays, etc, on a lane-by-lane against movement-by- movement basis. A full intersection example is given to illustrate the use of SIDRA-2. The number of the covering abstract for the conference is TRIS No. 393385. (Author/TRRL)

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  • 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:
    • Akcelik, R
  • Publication Date: 1984

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 137-149
  • Serial:

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Filing Info

  • Accession Number: 00393451
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, TRIS, ATRI
  • Created Date: Jun 30 1985 12:00AM