Artikel 6

1. In principle, examinations shall be carried out in through vestibule-coaches of international trains, whenever such coaches are used. Railway officials and agents shall give all necessary assistance in order to ensure effective and speedy examinations. They shall, in particular, co-operate in preventing passengers, subject to examination, from leaving or moving up or down the train until the examination is completed. As an exceptional measure, such examinations may be carried out in the Customs examination sheds of the station, Whenever the administration concerned deems it necessary.
2. In principle, the examinations referred to in paragraph 1 of this article shall be carried out in the following order:
(a) police examinations by the country of exit;
(b) customs and other examination by the country of exit;
(c) police examination by the country of entry; and
(d) customs and other examination by the country of entry.
3. Examinations by officials and agents of the country of entry may only be carried out in those parts of the train already examined by the officials and agents of the country of exit and the latter may not re-examine any parts of the train which they have already cleared, unless special provision be made to the contrary in the bilateral agreements.
4. For international trains of normal composition, namely ten to twelve coaches without overload, the wait required at the station for carrying out the said examinations shall not, in principle, exceed forty minutes; for smaller trains, and in particular for railcars, it shall be reduced to the minimum.
5. With a view to carrying out the provisions of paragraph 4 of this article, the railway administrations shall notify the competent authorities of the countries of entry and exit in due time of any changes in the frequency, timing and composition of international trains.