MEASUREMENT OF THE ACOUSTIC PERFORMANCE OF ROAD SURFACES

Tyre/road noise is the dominant source of noise from high-speed traffic and, therefore, considerable benefits could be achieved by greater use of surfaces that produce lower levels of tyre noise. Currently, the most widely used test method available for assessing the noise from different road surfaces is the Statistical Pass-by (SPB) technique. However, there are some disadvantages with the SPB method. For example, the results are not solely dependent on the road surface characteristics but also depend upon the type of vehicles selected from the traffic stream during measurements. To overcome some of these difficulties, a supplementary method, known as the Close-proximity (CPX) method is currently under development. This type of measurement attempts to isolate the noise specifically from the tyre/surface and therefore overcomes some of the potential difficulties encountered with the SPB method. This report provides a critical overview of the two methods and examines the degree of correlation between the noise levels derived from each procedure. The ability to estimate SPB traffic noise levels from CPX data would be of particular value in relating the acoustic characteristics of road surfaces with roadside traffic noise levels and, hence, on community noise impact. The greater efficiency of the CPX method would potentially allow large sections of the road network to be assessed in this manner.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09684093
• Corporate Authors:

  TRL

  Crowthorne House, Nine Mile Ride
  Wokingham, Berkshire  United Kingdom  RG40 3GA
• Authors:
  • BALSOM, M H
  • KOLAMTHODI, S
  • PHILLIPS, S M
  • ABBOTT, P G
• Publication Date: 2004-10

Language

• English

Media Info

• Pagination: 41 p.
• Serial:
  • PUBLISHED PROJECT REPORT PPR 021
  • Publisher: TRL
  • ISSN: 0968-4093

Subject/Index Terms

• TRT Terms: High speed ground transportation; High speed vehicles; Measurement; Noise; Prevention; Rolling contact; Speed; Surfacing; Test procedures; Traffic
• ITRD Terms: 5440: Contact (tyre road); 1163: High speed; 6136: Measurement; 2492: Noise; 9149: Prevention; 2972: Surfacing; 6288: Test method; 755: Traffic
• Subject Areas: Environment; Operations and Traffic Management; Railroads; Security and Emergencies;

Filing Info

• Accession Number: 00981125
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Nov 3 2004 12:00AM