The purpose of this book is to give a taste of the use of BIM in railway projects, through case studies, but also by giving an overview of the literature, experiences and basics of BIM. It is the result of a scientific research work, combined with the study of real cases. Throughout this paper and those preceding it, we have covered the issue of BIM and its integration into a railway project. We will proceed in the next research to a general conclusion that will define the general framework.