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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

formation level

  • Language : PIARC Road Dictionary / English
  • Theme : Roads Design Pavements
  • Definition : Surface of the subgrade or capping layer upon which the road pavement rests.
  • Synonyms : top of subgrade (US)

Planumshöhe

  • Language : PIARC Road Dictionary / German
  • Theme : Straßen Entwurf Fahrbahnbefestigungen
  • Definition : Oberfläche des Untergrundes/Unterbaus oder einer Verbesserung derselben, auf der die Straßenbefestigung liegt.
  • Synonyms : Planum2