In addition, member states not mentioned in the list will have to participate in the establishment of at least one corridor and, lastly, upon request from a member state, member states will have to participate in the establishment of a corridor or prolongation of an existing corridor, in order to allow a neighbouring member state to fulfil the obligation to establish at least one corridor.
Lisaks sellele peavad nimekirjas nimetamata liikmesriigid osalema vähemalt ühe koridori loomises ning peale selle peavad liikmesriigid osalema liikmesriigi taotlusel koridori loomises või olemasoleva koridori pikendamises, et võimaldada naaberliikmesriigil täita kohustust luua vähemalt üks koridor.