Propagation of Traffic Noise

Kenneth R. Agent & Charles V. Zegeer
The effects of various traffic, ground cover, and geometric conditions on traffic noise propagation were evaluated in this study. There were two general methods of data collection. The first used as many as four sound-level meters and graphic-level recorders to take simultaneous recordings of the traffic stream; the second method involved a constant noise source using a random noise generator. The L10 noise level reduction per doubling of distance increased substantially when the traffic volume...
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