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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

road stones

  • Language : PIARC Road Dictionary / English
  • Theme : Roads Materials Soils and Aggregates
  • Definition : Stones of natural (rock weathering, glacial or river deposits, landslides) or artificial origin (crushed rock, quarry waste) with a grading between 32 and 63 mm, used in construction.
  • Synonyms : road metal