Building Information Modeling (BIM) is the digital and graphical representation of the physical and functional characteristics of a structure. It provides a reliable basis for decisions throughout a building lifecycle, and with BIM it is possible to design, plan, build and track projects. In particular, BIM has sparked a transformation of the railway sector. Railway Information Modeling RIM is a compilation of two years’ worth of academic, conceptual and practical research on the integration of BIM into railway. It summarizes and focuses on a survey carried out by the authors, who are experts in the field. The book also contains a literature review and a case study to demonstrate the benefits and sustainability of BIM integration, and finishes with the practical steps and considerations for the successful management of the integration process.