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Computational Algorithm for a Fixed Cycle Traffic Signal and New Approximate Expressions for Average Delay

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  • Katsuhisa Ohno

    (Kyoto University, Kyoto, Japan)

Abstract

A computational algorithm for several characteristics such as the average delay, the average queue length and the probability of clearing the queue is devised for a fixed cycle traffic signal. The values of the average delay given by several theoretical expressions are compared with the exact values computed by the present algorithm. This comparison suggests new approximate expressions for the average delay. New approximate expressions and existing approximate expressions including Webster's full expression and Newell's expression are compared numerically with exact values of the average delay. It is shown that new approximate expressions give almost exact values of the average delay. In addition it is shown that Newell's expression is the most accurate of the existing approximate expressions.

Suggested Citation

  • Katsuhisa Ohno, 1978. "Computational Algorithm for a Fixed Cycle Traffic Signal and New Approximate Expressions for Average Delay," Transportation Science, INFORMS, vol. 12(1), pages 29-47, February.
    • Handle: RePEc:inm:ortrsc:v:12:y:1978:i:1:p:29-47
    DOI: 10.1287/trsc.12.1.29
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    Cited by:

    1. Mung, Gregory K. S. & Poon, Antonio C. K. & Lam, William H. K., 1996. "Distributions of queue lengths at fixed time traffic signals," Transportation Research Part B: Methodological, Elsevier, vol. 30(6), pages 421-439, December.
    2. Comert, Gurcan, 2016. "Queue length estimation from probe vehicles at isolated intersections: Estimators for primary parameters," European Journal of Operational Research, Elsevier, vol. 252(2), pages 502-521.
    3. Comert, Gurcan, 2013. "Effect of stop line detection in queue length estimation at traffic signals from probe vehicles data," European Journal of Operational Research, Elsevier, vol. 226(1), pages 67-76.

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