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Road surface textures are deviations from a planar surface, affecting the vehicle/tyre interaction. Pavement texture is divided into: Microtexture with wavelengths from 0 mm to , Macrotexture with wavelengths from to and Megatexture with wavelengths from to . ==Micro-texture== Micro-texture is the collaborative term for a material's crystallographic parameters and other aspects of micro-structure: such as morphology, including size and shape distributions; chemical composition; and crystal orientation and relationships〔Micro-texture Determination and its Applications (Second edition), V Randell, 2003〕 While vehicle suspension deflection and dynamic tire loads are affected by longer wavelength (roughness), road texture affects the interaction between the road surface and the tire footprint. Micro-texture has wavelengths shorter than 0.5 mm. It relates to the surface of the binder, of the aggregate, and of contamination's such as rubber deposits from tires. Mix contributes to dry road surface friction. Typically, road agencies do not monitor Mix directly, but indirectly by brake friction tests. However, friction also depends on other surface properties, such as Macro-texture. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Texture (roads)」の詳細全文を読む スポンサード リンク
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