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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

glass bead

  • Language : PIARC Road Dictionary / English
  • Theme : Operations Traffic Traffic Signing and Road Marking
  • Definition : Transparent spherical glass particle used to provide nighttime visibility for road markings and signs by retroreflecting the headlight beams of a vehicle towards the driver [CEN].
  • Synonyms : glass shot

Glasperle

  • Language : PIARC Road Dictionary / German
  • Theme : Betrieb Verkehr Beschilderung und Fahrbahnmarkierung
  • Definition : Transparente, sphärische Glaspartikel, die zur Verbesserung der Nachtsichtbarkeit auf Markierungen oder Verkehrszeichen aufgebracht werden und mittels Retroreflexion das Licht zum Fahrer zurückwerfen.

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