The ceremony of signing of the Treaty establishing the Transport Community in the languages of all parties to the Treaty was held in the premises of the Council of the EU on 9 October 2017 in Brussels. The ceremony was attended by the ambassador Kaja Tael, Head of Estonian Permanent Representation to the EU, Henrik Hololei, director-general of DG for Mobility and Transport and other representatives of the EU, as well as WB6 ambassadors.

On behalf of the Republic of Serbia, the versions of the Treaty in the languages of all parties to the Treaty were signed by the ambassador Ana Hrustanović, Head of Mission of the Republic of Serbia to the EU.