The ADR intends to increase the safety of international transport of dangerous goods by road. It has been regularly amended and updated since its entry into force in 1968. The most recent version has been prepared on the basis of amendments applicable as from 1 January 2021. Until now, the formal title of ADR was the "European Agreement concerning the international carriage of dangerous goods by road (ADR)". In this new edition the word European is removed to acknowledge the global status of ADR and as an encouragement to all UN Member States to join and fully implement it. See here.