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PIARC (World Road Association), founded in 1909 and comprising 125 member governments from all over the world, is the global forum for exchange of knowledge and experience on roads, road transport policies and practices. With consultative status to the Economic and Social Council of the United Nations, the Association is contributing to a stable and sustainable global development of the road and transport sector.

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Term of the Road Dictionary

microtexture

Language : PIARC Road Dictionary / English
Theme : Operations Road Surface Characteristics
Definition : Surface irregularities of a road pavement with horizontal dimensions ranging between 0 and 0.5 mm and vertical dimensions between 0 and 0.2 mm. Note: microtexture is related to the asperities of the coarse aggregate, the sand particles and the road surface in contact with the rubber of tyres. It makes the surface feel more or less harsh but is normally too small to be observed by the eye.

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