"Eaos" class rail cargo wagon of the Slovak Central Railways in Szeged-Rókus, Hungary, as part of a stone transport train. Key for Eaos letter group: *E = Open top railcar with high sidewalls *a = with four axes *s = In circulation according to the European "Technical Specification for Interoperability", appendix "B", standard "s" (max speed 100 km/h)