From the standpoint of sound propagation, urban traffic noise differs essentially from rural traffic noise. In urban areas there is little distance between source and affected surface, and while ground properties have little influence, reflecting surfaces play an important part. On rural roads traffic usually flows evenly, while in towns noise emission is complicated by factors which reduce speed such as traffic lights, junctions, roundabouts, bus stops, etc. Traffic noise measurements have been made in a large number of streets in different towns, accompanied by traffic counts. The streets represented various traffic, speed, building development etc conditions. The equivalent sound level in db(a) has been measured. The calculation models used were one related to the traffic noise calculation model, which also takes into account street geometry and other parameters which influence noise, and a simplified one based on classifying streets into four categories and, for specified traffic intensities, placing them into certain noise ranges. For levels above street level, interpolation based on a few calculated cases is used. /TRRL/

  • Corporate Authors:

    Ingemanssons Ingenjoersbyraa AB

    Box 53037
    Gothenburg,   Sweden 
  • Authors:
    • Benjegaard, S O
  • Publication Date: 1976


  • Swedish

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 83 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00147919
  • Record Type: Publication
  • Source Agency: Swedish National Road and Traffic Research Institute
  • Report/Paper Numbers: Report H-3490-A Monograph
  • Files: ITRD, TRIS
  • Created Date: Aug 4 1977 12:00AM