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Spatial aspects of traffic circulation: II. Routing patterns that exactly minimise path crossings

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  • Wright, Christopher
  • Jarrett, David
  • Appa, Gautam

Abstract

The total number of path crossings between vehicles following different routes on a road network can be taken as a rough proxy for congestion and accident risk. It is therefore useful to identify ways of routing traffic in the plane such that the numbers of crossings are minimised; these can serve as models for the design of traffic management schemes in urban areas. The authors have previously investigated a number of routing patterns; the best ones generated path crossings whose number exceeded a conjectured minimum by 33%. In this article, two configurations are put forward that achieve the minimum value. The networks required to support such routing patterns are probably not realisable in practice, but the exercise provides a useful insight into the traffic circulation problem and suggests a yardstick against which other routing patterns can be evaluated.

Suggested Citation

  • Wright, Christopher & Jarrett, David & Appa, Gautam, 1995. "Spatial aspects of traffic circulation: II. Routing patterns that exactly minimise path crossings," Transportation Research Part B: Methodological, Elsevier, vol. 29(1), pages 33-46, February.
    • Handle: RePEc:eee:transb:v:29:y:1995:i:1:p:33-46
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    1. Wright, Christopher & Jarrett, David & Appa, Gautam & Rados, Jovan & Vukanovic, Smiljan, 1995. "Spatial aspects of traffic circulation: I. A review of alternative systems," Transportation Research Part B: Methodological, Elsevier, vol. 29(1), pages 1-32, February.
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    1. Wright, Christopher & Jarrett, David & Appa, Gautam & Rados, Jovan & Vukanovic, Smiljan, 1995. "Spatial aspects of traffic circulation: I. A review of alternative systems," Transportation Research Part B: Methodological, Elsevier, vol. 29(1), pages 1-32, February.

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