This paper describes a computer simulation model capable of predicting the noise levels generated by traffic passing through road intersections controlled by roundabouts where departures from free-flow traffic conditions occur. The model depends for its operation on the acoustical and flow characteristics of single vehicles travelling on a road which the overall noise generated by traffic streams can be deduced using a sampling/integration technique. Distance effects, ground cover, vehicle type, velocity and headway characteristics, etc. Are taken into account in the model and the simplest possible input parameters are used deliberately to facilitate the eventual use of the model by highway and planning authorities. Good agreement has been achieved between measured and predicted l10 values for freely flowing traffic negotiating roundabouts. Further applications of the model involving road intersections controlled by traffic lights and the effect of traffic queues are nearing completion. (Author/TRRL)

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  • Corporate Authors:

    Applied Science Publishers Limited

    22 Rippleside Commercial Estate, Ripple Road
    Barking, Essex,   England 
  • Authors:
    • Diggory, I S
    • Oakes, B
  • Publication Date: 1980-1-2

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Filing Info

  • Accession Number: 00329691
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Oct 28 1981 12:00AM