Quieter Pavements: Where Are We, Where Are We Going, and How Do We Get There?

Current Federal Highway Administration (FHWA) policy requires that planned highway capacity increases and new highways have environmental impact statements, including noise impact studies, made. Most of these are carried out with the FHWA's Traffic Noise Model®(TNM) software. Analysis of both the existing TNM database and ongoing studies are also being performed. Long-term pavement/tire noise monitoring was performed on five high desert test sections north of Los Angeles five years ago to test quieter pavements, a potential noise abatement tool in addition to what is currently approved by FHWA, earth berms and barrier walls. Comparing the California Department of Transportation's normal dense graded hot mix asphalt surface mixes to relatively thin open-graded friction courses was done to determine the achievable amount of pavement/tire noise reduction, with typical acoustic attenuation length measurement a secondary study goal. While too early for a final report, some generalities show that thick open-graded friction courses were the quietest. Retesting until test section replacement for pavement performance reasons should allow overall pavement performance and acoustic performance longevity to be compared.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Photos;
  • Pagination: pp 16-19
  • Serial:
    • Asphalt
    • Volume: 22
    • Issue Number: 1
    • Publisher: Asphalt Institute
    • ISSN: 0004-4954

Subject/Index Terms

Filing Info

  • Accession Number: 01049891
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: May 8 2007 5:21PM