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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

rare weather event

Language : PIARC Road Dictionary / English
Theme : Environment Climate and Geography
Definition : Adverse weather conditions that have a defined low (e.g. 1-%) probability of occurrence during a given period at a given location. Note: because society and the environment are not adapted to rare events, large damages often occur. Hence, despite rarity, high vulnerability can lead to large losses.

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