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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

microroughness

  • Language : PIARC Road Dictionary / English
  • Theme : Operations Road Surface Characteristics
  • Definition : Asperities up to half a millimetre in size upon the surface of an aggregate, resulting from its petrographic nature.

Feinrauheit

  • Language : PIARC Road Dictionary / German
  • Theme : Betrieb Fahrbahneigenschaften
  • Definition : Rauheit bis zu einer Größe von einem halben Millimeter auf der Oberfläche eines Mineralstoffkorns aufgrund seiner petrographischen Herkunft.

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