Relationships between pavement surface geometry, truck tire sound, and skid number are investigated to provide an understanding of the tire/pavement interaction mechanism. Correlation techniques are used to determine the relationship between each pair of the three parameters. Results show 1) the relationship between pavement profile and truck tire sound as a function of frequency, 2) a positive relationship between pavement profile spectral amplitudes, and pavement skid number, and 3) no significant relationship existing between truck tire sound and skid number.

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