A research titled ‘Estimation of the real number of road casualties in Europe’ co-authored by J.Broughton, M.Keigan, G.Yannis, P.Evgenikos, A.Chaziris, E.Papadimitriou, N. Bos, S.Hoeglinger, K.Perez, E.Amoros, P.Hollo and J.Tecl was published in the Journal Safety Science in March 2010. Within this research, the police under-reporting of non-fatal road accident casualties in eight European countries was examined by means of a common methodology applied in each country.  For almost all countries, the actual number of serious casualties according to the new proposed definition was found lower than the number of police-recorded serious casualties.