The potential of landslides and slope failures present a great danger to the federal highway network. Beside factors such as geology, morphology, hydrology and vegetation, the climate plays a significant triggering role in terms of the probability of landslides. Based on the anticipated climatic developments, including changed temperature and precipitation properties, the risk potential increases. Due to this development, the extension and new construction of federal highways, as well as the maintainence of existing road networks are subject to a greater risk regarding the extent of damage and therefore increased construction, maintenance and service costs.
The pilot project „Assessment of slope failure and landslide risks due to increasing extreme weather events“ already developed a geotechnical -climatic model approach for a first esti-mation of emerging landslide threats in selected territories.
The research project intends to further develop this model approach and generate a national hazard map by taking further landslide-relevant parameters as well as potential risk assess-ment into consideration. This will be used within a nationwide model based on the entire federal highway network and in accordance with an assessment schema and should provide a time-structured overview of emerging, potential landslide risk zones, drawing attention to each key area where more precise assessment or further measures are necessary.