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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

megatexture

Language : PIARC Road Dictionary / English
Theme : Operations Road Surface Characteristics
Definition : Surface irregularities of a road pavement with horizontal dimensions ranging between 50 and 500 mm and vertical dimensions between 10 and 50 mm. Note: this type of texture has wavelengths in the same order of size as a tyre-road interface.

Megatextur

Language : PIARC Road Dictionary / German
Theme : Betrieb Fahrbahneigenschaften
Definition : Unebenheit der Oberfläche einer Fahrbahnbefestigung mit einer horizontalen Ausdehnung zwischen 50 und 500 mm und einer vertikalen Ausdehnung zwischen 10 und 50 mm. Diese Texturart hat Wellenlängen in der gleichen Größenordnung wie der Reifen-Fahrbahn-Kontakt.