Three noise level measurement systems have been investigated and made operational. They are: 1. Graphic Level Recording Method. 2. Periodic Sampling Method and 3. Environmental Noise Classifier Method. The relative accuracy of the three systems were compared by simultaneous field measurements of traffic noise. Other factors such as equipment portability, data analysis requirements, and expertise requirements were also compared. Two major noise prediction methods were investigated and compared. They are: 1. NCHRP Report 117--Noise Prediction Method. 2. TSC Noise Prediction Method. Noise level predictions using the two methods were compared to actual field measurements. The relative ease of each was also compared. The major findings of this study are: 1. The periodic sampling and environmental noise classifier methods of noise measurement should be used for the majority of ambient noise measurements. 2. The NCHRP Report 117 noise prediction method should be the basic method used for noise level predictions. The TSC method should be used only where, because of complex geometrics, the use of the NCHRP Report 117 method is impractical. /FHWA/

Media Info

  • Pagination: 43 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00264626
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: Rept. No. 78 Final Rpt.
  • Created Date: Jan 16 1975 12:00AM