The European Code for Inland Waterways (CEVNI) contains the core rules applicable to the traffic on inland waterways in the UNECE region such as marks and draught scales on vessels, visual signals on vessels, sound signals and radiotelephony, waterway signs and markings, rules of the road, berthing rules, signalling and reporting requirements as well as prevention of pollution of water and disposal of waste. These rules constitute the legal and technical basis for national inland waterway codes in UNECE member States. CEVNI is regularly updated in parallel with the evolution of the navigation regulations of River Commissions in the UNECE region thus ensuring that they remain harmonized.

This sixth revised edition of CEVNI, adopted by resolution No. 102 at the sixty-fifth session of the Working Party on Inland Water Transport (SC.3) in November 2021, replaces the fifth revision of the annex to resolution No. 24. With this sixth edition, SC.3 has taken into account best practices from the existing up-to-date traffic regulations of UNECE member States and River Commissions, other SC.3 resolutions, provisions of the European standards adopted by the European committee for drawing up standards in the field of inland navigation (CESNI) and new developments in the sector.

In particular, this edition contains the updated provisions for the list of documents to be present onboard an inland waterway vessel, the stability of vessels carrying containers, safety of vessels using liquefied natural gas as a fuel, navigation by radar, radiotelephony, information and navigation devices, reporting requirements, prevention of pollution of water from inland waterway vessels and other prescriptions.