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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

speed-flow relation

  • Language : PIARC Road Dictionary / English
  • Theme : Operations Traffic Traffic Engineering
  • Definition : Representation of traffic flow in the form of a mathematical relationship between flow and speed on a given road section.

Verkehrsstärke-Geschwindigkeits-Diagramm

  • Language : PIARC Road Dictionary / German
  • Theme : Betrieb Verkehr Verkehrstechnik
  • Definition : Mathematische Funktion für den Zusammenhang zwischen Geschwindigkeit und Verkehrsstärke auf einem bestimmten Straßenabschnitt.
  • Synonyms : Leistungs-Geschwindigkeits-Verhältnis