A voluntary specification for “Automatic Couplers” for use bycompanies in the rail sector.This specification is applicable to rolling stock that is equipped with automatic couplers and provides a common specification for automatic couplers in rollingstock between train operators. This specification is an add-on to the Technical Specifications for Interoperability (TSI) andEuroNorms (ENs). This EuroSpec contains requirements at a system level for the automatic coupler andits interfaces, and unifies the required performances of the different operators.