The purpose of this paper is twofold: (1) to study the feasibility of altering the law and the method of enforcement to include a maximum limit to the noise that a vehicle should produce in operation, and (2) to suggest an initial draft for noise control legislation in Pennsylvania. The determination of such a limit includes consideration of a suitable method of measuring sound intensity and a means of relating the physical measurement of sound intensity to the human judgment of loudness. Also, the actual numerical value of the limit must reflect an acceptable level of loudness, which will effect the control needed, and at the same time be reasonable. The sources of defining reasonableness are (1) the American Manufacturers Association Motor Truck Committee, (2) other existing laws, and (3) field measurements. The level so determined as the limit is 92 decibels on the A-weighting scale at a distance not less than 25 feet from the right front wheel of the vehicle. The effectiveness of any legislation depends on the ability to enforce it, therefore some discussion of the methods of taking the measurements of sound level is included. Finally a recommendation is made as to how the law could be altered in Pennsylvania to implement the conclusions of this study.

  • Supplemental Notes:
    • Proceedings of the Purdue Noise Control Caonference, Purdue University, 14 July 1971.
  • Corporate Authors:

    Purdue University

    School of Aeronautics and Astronautics
    West Lafayette, IN  United States  47907
  • Authors:
  • Publication Date: 1971-7-14

Media Info

  • Features: Appendices; References;
  • Pagination: 8 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00261040
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 22 1974 12:00AM