Accidents between cars and bicyclists often end with severe or fatal injuries for the cyclists. During the last decade the number of fatally injured bicyclists dropped, but the relative share of bicyclists increased significantly. In German cities the share of bicyclists in traffic rises. This is the reason why the safety of bicyclists in traffic ranks high in public awareness. Pushed by EuroNCAP and the European Commission future cars have to be address bicyclist protection by suitable active and passive countermeasures.