The large-scale research facilities and laboratories of the Institute of Transportation Systems slot together like building blocks. Being able to flexibly combine each individual building block is a significant feature of the facility's portfolio. For example, it is possible to combine several different simulation models for volunteer studies. This means that we are able to take into account critical situations in traffic flow – at junctions and level crossings – at an early stage in the development of future assistance systems. In addition, the modules can be combined to form a complete workflow. The Institute's large-scale research facilities make it possible to create a continuous and unbroken chain from the collection of empirical data and carrying out of simulated trials right through to the step-by-step translation of scientific findings into reality.