The rule of interpretation contained in paragraph 4 has been based on the wording of Article 6(2) of the Treaty on European Union (cf. now the wording of Article I-9(3) of the Constitution) and takes due account of the approach to common constitutional traditions followed by the Court of Justice (e.g., judgment of 13 December 1979, Case 44/79 Hauer [1979] ECR 3727; judgment of 18 May 1982, Case 155/79, AM&S, [1982] ECR 1575).
Pravilo o razlagi, vsebovano v četrtem odstavku, temelji na besedilu člena 6(2) Pogodbe o Evropski uniji (prim. sedaj besedilo tretjega odstavka I-9. člena Ustave) in ustrezno upošteva pristop do skupnih ustavnih tradicij, ki mu sledi Sodišče (npr. sodba z dne 13. decembra 1979, zadeva 44/79 Hauer [1979] PSES 3727; sodba z dne 18. maja 1982, zadeva 155/79, AM&S, [1982] PSES 1575).