Geohazards can result in significantloss of human life as well as cause extensive damage toinfrastructure. The magnitude and frequency of geohazardevents ranges from earthquakes and tsunamis to landslidesand flash floods. In the most severe cases involving the lowfrequency but more intense geohazards like earthquakes ortsunamis, the primary concern, ex ante, is on theminimization of the potential loss of life and property,damage to infrastructure, and ensuring continuity in thefunctionality of public and private services. In the higherfrequency, lower impact, geohazards, such as landslides,flash floods, and rock fall, proper planning remains vital,but is often overlooked in transition and developingeconomies. In the transport sector, proper planning for thiscategory of geohazards can realize significant savings inconstruction costs, avoiding cost over-runs, repair costsand costly delays, and subsequent maintenance costs. Thistechnical note provides a summary of the typology ofgeohazards, prospective mitigation measures, and currentpractices in managing geohazards. It also outlines some keyrecommendations to facilitate improved management ofgeohazards in the transport sector.
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