Skip Top Navigation

Research Reports

Vehicle Noise Radiation, Effective Height and Frequency Measurements


Actual vehicle measurements indicate that the best single frequency approximation for "A" weighted noise is 650 Hz. For light vehicles, the effective source height is 0.2 m (0.7 feet) above the lane surface. For heavy vehicles, the effective source height is 0.8 m (2.6 feet) above the lane surface.


  • Date Published: August, 1976
  • Publication Number: WA-RD 24.4
  • Last Modified: July 29, 2007
  • Author: Rene N. Foss.
  • Originator: University of Washington. Applied Physics Laboratory.
  • # of Pages: 29 p., 928 KB (PDF)
  • Subject: Audio frequency, Diffraction, Heavy vehicles, Height, Measurement, Noise, Noise barriers, Noise control, Sound attenuation, Traffic noise, Vehicles, Walls.
  • Keywords: Highway acoustics, noise suppression, Fresnel diffraction.
  • Related Publications:

    Noise Barrier Screen Measurements, Single Barriers, (WA-RD 24.1). Attenuation of Sound as a Function of Barrier Angle, (WA-RD 24.2). Noise Barrier Screen Measurements, Double Barriers. (WA-RD 24.3).
    Field Evaluation of Single Barriers, (WA-RD 24.5).


This abstract was last modified April 29, 2008