Article 4

Member States shall lay down the terms on which a transport undertaking may, by way of derogation from Article 3 (1), operate on a provisional basis for a maximum of one year, which period may be extended by not more than six months in special duly justified cases, in the event of the death or physical or legal incapacity of the natural person pursuing the occupation of carrier or the natural person complying with the provisions of Article 3.

However, the competent authorities of the Member States may, by way of exception, permanently authorize in certain special cases the operation of an undertaking by a person who does not meet the condition of professional competence referred to in Article 3, but who has had at least three years' practical experience in the everyday management of the undertaking concerned.