Welcome on piarc.org!

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.

This site uses cookies to optimize its operation. They allow you to securely access your personal space and download our publications. You accept their use by clicking on the "Accept" button.

Term of the Road Dictionary

cloud cover

  • Language : PIARC Road Dictionary / English
  • Theme : Operations Winter Serviceability
  • Definition : Portion of the sky that is attributed to clouds, usually measured in eighths (oktas) or tenths.
  • Synonyms : sky cover

Bewölkungsgrad

  • Language : PIARC Road Dictionary / German
  • Theme : Betrieb Befahrbarkeit im Winter
  • Definition : Anteil des Himmels, der durch Wolken bedeckt ist -- wird i.d.R. in Achtel oder Zehntel gemessen

Back to theme