Comparisons are made of noise measurements and predictions obtained from a survey carried out on the Midland Links Motorways in 1973-74 within the confines of the Noise Insulation Regulations 1973 and the then specified calculation procedure "Design Bulletin 26 - New Housing and Road Traffic Noise". The criterion used for the comparison was the l10 18 hour noise levels. Details are given of the noise survey. The limitations of the methods used are stated together with the locations of the measurement sites. The results of the comparisons made for 105 sites are discussed. Based on these results, shortened calculations and measurement procedures are suggested: assumptions are made concerning high motorway parapets, cuttings and intervening rows of houses, and 15 minute sample measurements were undertaken. It is concluded that "design bulletin 26 - new housing and road traffic noise" was a poor prediction of traffic noise levels, but that, because of inaccurracy in the measurement system, there will always be significant differences between predicted and measured L10 values. It is inferred that if a noise measurement survey is contemplated, there is little point in carrying out a detailed prediction study. However, the author still feels that if measurements on a large scale are contemplated, a fairly cursory series of calculations should produce results accurate enough for comparative use or for survey planning. In borderline cases, 15 minute sample l10 measurements between the hours of 10.00 and 16.00 could be used rather than 18 hour L10 measurements. /TRRL/

  • Corporate Authors:

    Trade and Technical Press, Limited

    Crown House
    Morden, Surrey SM4 5EW,   England 
  • Authors:
    • Revill, D
  • Publication Date: 1976-1

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00138892
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Oct 26 1976 12:00AM