A voluntary specification for toilets on railway vehicles for use by companiesin the rail sector and provides a common specification for toilets on railway vehicles inrolling stock between train operators. This specification is applicable to rolling stock that is equipped with toilets and isintended for European style toilets (sitting type). The applicable requirements of this specificationcan also be used for other type of toilets, for example squatting toilets and urinals.This specification is an add-on to the Technical Specifications of Interoperability (TSI). The EuroSpeccontains requirements at system level of toilets of railway vehicles and its interfaces and unifies therequested performances of the different operators.