The Siemens Mobility Rolling Stock Bogie Unit in Graz, Austria is part of MoComp – the family of rail components and the world competence centre for bogies within Siemens Mobility, which means that all bogie developments (for European and international projects) are completed in the Graz and all bogie activities in the satellite production units are managed by Graz. Although product design is, of course, still mainly driven by customer requirements for key parameters, there are several changes and developments which have made a huge impact on the design of modern bogies and wheelsets.