WP1 - Technology, Operations and Standardisation The main objective of this Work Package is to develop a technical definition and standardisation of the product. It wil propose a coordinated approach for the development of an open EU DAC product specification as well as assessment criteria for an applicable DAC type in the EU, including mechanical, pneumatic, electric and data. This activity will feed into the new issue of EU TSI 2022 with a new version of TSI Wagon with a reference to the digital automatic coupler as interoperable and constituent-based, assuring interoperability at European level. This Work Package also covers the standardisation within CENELEC and all the necessary safety assessments of DAC for the approval of the European Union Agency for Railways (ERA), as well as the impact on the safety management system of railway undertakings and infrastructure managers, etc. It also covers the definition of DAC integration with locomotives and other rail vehicles by means of hybrid DAC versions.