A FIELD INVESTIGATION OF NOISE BARRIER PERFORMANCE AND WIND DEPENDENT NOISE PROPAGATION

This report gives the results of measurements made of the acoustic performance of a noise barrier erected alongside the M40 at a point where the motorway passes to within 150 metres of a residential estate. The average reduction in l10 (18-hour) obtained at previously directly exposed locations along the first row of houses was 5 db(a) but the barrier did not reduce the noise levels along the first row where there was already a considerable degree of shielding and at the other measurement locations situated beyond the first row. The relationship between sound level and the velocity of the wind vector normal to the road has been explored. It is shown that wind can reduce the effectiveness of the barrier and increase the range of variation in the sound level following the construction of the barrier. /Author/TRRL/

  • Corporate Authors:

    Transport and Road Research Laboratory (TRRL)

    Wokingham, Berkshire  United Kingdom 
  • Authors:
    • NELSON, P M
    • ABBOTT, P G
  • Publication Date: 1978

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 30 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00194409
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Report/Paper Numbers: Supl Rpt SR 388 Monograph
  • Files: ITRD, TRIS, ATRI
  • Created Date: Jul 11 1979 12:00AM