Most vehicles from Wörmann have a type approval and corresponding COC (Certificate of Conformity) certificates. With this certificate of conformity, Wörmann trailers are easily operational within the European Union. It also requires no tedious application for a single operating permit for approval more.

In France, a special arrangement applies to vehicles. Each type of vehicle needs a so-called CNIT number (Code National d'Identification du Véhicule) to be admitted. Woermann also takes care of this process for you and notes the CNIT number directly on the COC papers. This means that all roads are open to you in the neighboring country too.