Tyre noise will become one of the salient features of track noise if it is possible to reduce lorry power train sound emission by 10 dba. Research into the nature of tyre-road noise is aimed at comparing measurements on roads and in the laboratory with predictive models of the action of the tyre on the road. Measurements have shown that there is a much greater contrast in tread pattern road noise on a smooth concrete surface than one with a deeper macrotexture. Track tyre noise increases by 7-11 dba on a wet surface and on average by 10 dba with a doubling of speed. Tread patterns, tyre construction and state of wear have a lesser effect on the noise level. The grip of tyres on a wet road can be increased by increasing the macrotexture or changing the tread pattern; both methods increase noise. However the grip can be increased with a reduction in noise by using a non polishing surface manufactured by Dunlop known as "delugrip". Its surface is sufficiently course to provide adequate drainage and fine enough to give minimum noise. /TRRL/

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  • Corporate Authors:

    Institute of Road Transport Engineeers

    1 Cromwell Place
    London SW1 25F,   England 

    Institute of Road Transport Engineeers

    1 Cromwell Place
    London SW1 25F,   England 
  • Authors:
    • WALKER, J C
  • Publication Date: 1975-11


  • English

Media Info

  • Features: Figures; References;
  • Pagination: p. 11-12
  • Serial:
    • Issue Number: 68
    • Publisher: Institute of Road Transport Engineeers
    • ISSN: 0020-3122

Subject/Index Terms

Filing Info

  • Accession Number: 00133767
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Aug 23 1976 12:00AM