The European Code for Signs and Signals on Inland Waterways (SIGNI), adopted by resolution No. 90 of the Working Party on Inland Water Transport on 5 October 2018, provides recommendations for the competent authorities for the installation and application of buoyage and marking on European inland waterways contained in the fifth revision of CEVNI (ECE/TRANS/SC.3/115/Rev.5). The European Code for Signs and Signals on Inland Waterways (SIGNI), adopted by resolution No. 90 of the Working Party on Inland Water Transport on 5 October 2018, provides recommendations for the competent authorities for the installation and application of buoyage and marking on European inland waterways contained in the fifth revision of CEVNI (ECE/TRANS/SC.3/115/Rev.5).