Abstract
Three specifications for the noise evaluation of pavement surfaces have been developed for the American Association of State Highway Transportation Officials (AASHTO). These include (1) the On-Board Sound Intensity (OBSI) method (AASHTO T-360-16) of directly measuring noise generated at the tire-pavement interface in isolation of other noise sources, (2) the Statistical Isolated Pass-By (SIP) method (AASHTO TP 98-13) of measuring noise from isolated vehicles in existing traffic, and (3) the Continuous-Flow Traffic Time Integrate (CTIM) method (AASHTO TP 99-18) of capturing the sound from existing traffic for all vehicles on all roadway lanes. This presentation will describe and compare the procedures of the three AASHTO measurement methods used for the noise evaluation of pavements.
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