Currently published in the Official Gazette

In the Official Journal of the EU - OJ L 95 - of 30 March 2020, it was published:
Commission Implementing Decision (EU) 2020/453 of 27 March 2020 on harmonised standards for rail transport products developed in support of Directive 2008/57/EC of the European Parliament and of the Council on the interoperability of the rail system within the Community: here (available in Czech language only)
In the Official Journal of the EU - OJ L 84 - of 20 March 2020, the following was published
Commission Implementing Regulation (EU) 2020/424 of 19 March 2020 on the submission of information to the Commission on the non-application of technical specifications for interoperability in accordance with Directive (EU) 2016/797: here (available in Czech language only)