Abstract
Test surface for road vehicle noise has been standardized as ISO 10844. The surface course has to be paved with dense graded asphalt concrete using straight asphalt. There exists a need to obtain the effect on noise measured value due to change of the surface texture depth during usage of the surface. This paper presents evaluated characteristics of the surface texture, comparing change of the surface texture depth with evaluated value of power spectral density of surface texture. This study also discusses the relation between surface texture depth and tire/road noise, and same knowledge as porous asphalt is obtained.
