ABSTRACT
This chapter describes the risk mitigation strategies adopted for the selected roads and introduces the crucial issue of the residual risk management. It shows how the regional authorities faced the problem, and tries to summarize the answer that they gave to the issue by combining countermeasure, information and maintenance actions. In the Umbria Region of central Italy rapid landslides are very common and may cause severe damages to public and private properties. In the Umbria Region, the management and mitigation of the risk produced by rapid landslides that threat life-lines have been a crucial challenge, due to the widespread landslide areas in the region, and to the intensity of each event. In add, the morphologic characteristics of the territory often lead the transportation paths to be nearly obliged, particularly in some areas where the bottoms of the narrow valley are the only alternative for the roads.
