Lorsqu'un examen est organisé par l'instance responsable de la formation, des confusions d'intérêts peuvent se produire (notamment si un soutien financier est octroyé aux instances de formation en fonction du nombre de lauréats), ce qui peut nuire à la fiabilité de l'examen.
It is not the content of the training but the final knowledge and ability of the driver which are important. If an examination is held by the same organisation which has provided the training, this could lead to a conflict of interests (particularly if training bodies receive funding on the basis of the number of pupils who pass), and this does not help the credibility of the examination.