2018/1846 amending the Annexes to Directive 2008/68/EC of the European Parliament and of the Council on the inland transport of dangerous goods to take into account scientific and technical progress (link)
Various sections of Directive 2008/68/EC refer to provisions set out in international agreements on the inland transport of dangerous goods by road, rail and inland waterways as defined in Article 2 of that Directive.
The provisions of those international agreements are updated every two years. Consequently, the last amended versions of those agreements shall apply as from 1 January 2019, with a transitional period up to 30 June 2019.
Source: EC.