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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


  • Language : PIARC Road Dictionary / English
  • Theme : Operations Road Safety
  • Definition : Combination of the probability of occurrence of harm and the severity of the harm [ISO IEC 51]. Note: in risk management, risk is often characterized by reference to potential events, consequences, or a combination of these and how they can affect the achievement of objectives (effect of uncertainty on objectives) [ISO 31000/PIARC].

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