The results of a survey by the Institut für Zweiradsicherheit e.V. (ifz) on the topic “Advanced Rider Assistance Systems for Powered Two- Wheelers (ARAS-PTW)” carried out by ifz in the year 2009 triggered the study at hand. In fact the survey showed that both male and female motorcycle riders have knowledge deficiencies as regards rider assistance systems.

Against this background we explored the matter and found out that the respective literature offers a wide variety of definitions of assistance systems. This variety was the reason for a first attempt to clearly define the term “Rider Assistance Systems for Powered Two-Wheelers” – taking into account all the relevant specific requirements.

Furthermore, the study offers a general synoptic view (updated September 2010) of current rider assistance systems for powered two-wheelers.