(11)A high level of professional qualification should increase the socioeconomic efficiency of the road transport sector. It is therefore appropriate that applicants for the post of transport manager should possess high-quality professional knowledge. In order to ensure greater uniformity of examinations and to promote a high quality of training, it is appropriate to provide that Member States may authorise examination and training centres according to criteria to be defined by them. Transport managers should possess the requisite knowledge for managing both national and international transport operations. The list of subjects of which knowledge is required in order to obtain a certificate of professional competence and the procedures for the organisation of examinations are likely to evolve with technical progress, and provision should be made for updating them. It should be possible for Member States to exempt from the examinations persons who can provide proof of continuous experience in managing transport activities.