A DECOMPOSITION APPROACH FOR SIGNAL OPTIMIZATION IN ROAD NETWORKS

In recent years, considerable advances have been made in techniques for the optimization of signal timings at isolated junctions operating under fixed-time control. This paper shows how these techniques can be applied in the optimization of signal timings in coordinated networks by using a decomposition approach. The signal timings at a junction in a network can be specified fully by the sequence of stages, interstage structures, cycle time, stage durations and offset. Of these variables, the third, fourth and last are endogenous to network optimization methods, the first and second being exogenous. Techniques have been developed recently to optimize all but the last variable (which is not there defined) at individual junctions, and these have been found to give considerable improvements in operational performance. This paper shows how the differences inherent between individual junction and network optimization methods can be reconciled within a decomposition approach so that the latter can benefit from some of the advantages of the former.

  • Availability:
  • Corporate Authors:

    Elsevier

    The Boulevard, Langford Lane
    Kidlington, Oxford  United Kingdom  OX5 1GB
  • Authors:
    • Heydecker, B G
  • Publication Date: 1996-4

Language

  • English

Media Info

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Filing Info

  • Accession Number: 00721921
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 21 1996 12:00AM