A paper titled “Investigation of accidents involving powered two wheelers and bicycles – A European in-depth study” authored by L.Brown, A.Morris, P.Thomas, K.Ekambaram, D.Margaritis, R.Davidse, D.Shingo Usami, M.Robibaro, L.Persia, I.Buttler, A.Ziakopoulos, A.Theofilatos, G.Yannis, A.Martin and F.Wadji, is  published in Journal of Safety Research. Highly detailed data have been collected for 500 accidents involving PTWs or bicycles in the EU, which were analyzed on a case-study basis and led to detailed insights on such accidents. Analysis results suggest that ‘looked but failed to see’ remains a common cause, and in many cases the actions of the other vehicle were the critical factor, though PTW rider speed or inexperience played a role in some cases.