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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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  4. Term of the Dictionary | unevenness

Term of the Road Dictionary

unevenness

  • Language : PIARC Road Dictionary / English
  • Theme : Operations Road Surface Characteristics
  • Definition : Surface irregularities of a road pavement with horizontal dimensions greater than 500 mm and vertical dimensions exceeding the tolerance of the design specifications. Note: unevenness is usually identified in two forms: longitudinal or transverse. The former is associated with riding comfort and the latter with rutting [ISO].
  • Synonyms : roughness (US)

Unebenheit

  • Language : PIARC Road Dictionary / German
  • Theme : Betrieb Fahrbahneigenschaften
  • Definition : Unregelmäßigkeiten der Oberfläche einer Fahrbahnbefestigung mit einer horizontalen Ausdehnung von mehr als 500 mm und vertikalen Ausdehnung, die die Toleranzen der Leistungsbeschreibung überschreiten. Beachte: Unebenheit ist in zwei Richtungen unterscheiden: längs oder quer. Unebenheiten in Längsrichtung beeinflussen vor allem den Fahrkomfort und diejenigen in Querrichtung (wie Spurrinnen) vor allem die Verkehrssicherheit.