The first part of this book reflects efforts of the geoscience and the civil engineering community in earthquake mitigation. Earthquake early warning systems (EWS) as components of earthquake information systems can be utilised by a number of ’customers’ ranging from chemical plants to transportation services. The paper by F. Wenzel discusses the most recent developments in this field and highlights the specific future of the EWS for the Romanian capital Bucharest. Another result of collaboration between civil engineers and geoscientists is presented in Facke et al. who study the seismic safety of long-span bridges crossing the river Rhine. Key questions refer to the appropriate level of ground motion that has to be expected but also to the construction type. The authors reveal specific failure mechanism for a box girder bridge. Ground motion modelling is often done with empirical laws adopted from several areas without consideration of information on the geology of the earthquake source and the geology of the medium in which the source-generated waves propagate.