A paper titled ‘Road safety performance indicators for the interurban road network‘ co-authored by G.Yannis, W.Weijermars, V.Gitelman, M.Vis, A.Chaziris, E.Papadimitriou and Azevedo C. is published in the Accident Analysis and Prevention Journal. This paper presents a theoretical concept for the determination of this SPI as well as a translation of this theory into a practical method. Also, the method is applied in a number of pilot countries namely the Netherlands, Portugal, Greece and Israel. The results show that the SPI could be efficiently calculated in all countries, despite some differences in the data sources. In general, the calculated overall SPI scores were realistic and ranged from 81 to 94%, with the exception of Greece where the SPI was relatively lower (67%).