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Sabah Said Razouki, Ph.D., Dipl.-Ing., CEng., AM.ASCE, College of Engineering, Al-Nahrain University, Baghdad, Iraq
Saad Yousif, Ph.D., M.Sc. Senior Lecturer, University of Salford, Manchester M5 4WT, UK
Presented in this paper is a new algorithm based on matrix algebra for determining turning movements at special road junctions in which certain movements within the junction are prohibited. This is achieved by developing mathematical models based on continuity of flow and the fact that the number of linearly independent equations is equal to the number of unknown traffic streams. The models have practical use in reducing the number of detectors or counters needed in collecting the turning movements from each arm/link of a junction and have the advantage of reducing the time required for the analysis of traffic survey data. These models were validated against data obtained from different sites in different countries and excellent agreement was found between the calculated and actual turning movements. The paper reveals that the solution vector for each case is unique and relatively insensitive to light U-turns.
mathematical model, road junctions, turning movements.
Cite this paper
Sabah Said Razouki, Ph.D., Dipl.-Ing., CEng., AM.ASCE, Saad Yousif, Ph.D., M.Sc. Senior Lecturer, A new turning movement algorithm for special road junctions, SCIREA Journal of Agriculture. Vol. 1 , No. 1 , 2016 , pp. 35 - 49 .
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