EFFECTIVENESS OF NOISE BARRIERS ALONG THE CAPITAL BELTWAY (I-495) IN NORTHERN VIRGINIA

A recent Federal Highway Administration study of the effectiveness of three noise barriers along I-495 in northern Virginia is described. The study sites included (a) an earth berm, (b) a metal wall on an earth berm, and (c) a concrete wall on an earth berm. The study results, though limited in scope (no statistical analysis was performed,), support conclusions reached in other studies that have attempted to validate the Federal Highway Administration's Highway Traffic Noise Prediction Model: The model provides an accurate estimate of (a) levels of unshielded traffic noise close to the roadway (7.5-15m) and (b) levels of shielded traffic noise behind noise barriers. In addition, the results confirm that the noise barriers studied have reduced the level of traffic noise by at least 50 percent. (AUTHOR)

Media Info

  • Media Type: Print
  • Features: Figures; Maps; Photos; References; Tables;
  • Pagination: pp 21-26
  • Monograph Title: Highway noise abatement
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00316377
  • Record Type: Publication
  • ISBN: 0309029988
  • Files: TRIS, TRB
  • Created Date: Oct 8 1980 12:00AM