Artikel 9

1. Police and Customs examinations on international trains shall, so far as possible, be carried out while the train is in motion, provided that such examinations prove more effective and at the same time more convenient for the passengers:
(a) whenever the non-stop run, either before or after the frontier station of each of the two adjoining countries, allows sufficient time on its territory for completion of the necessary formalities; and
(b) provided examination while the train is in motion enables the waits either at frontier stations or at stations where examinations are carried out by the two adjoining countries to be appreciably reduced.
2. In cases where it is deemed necessary, in order to expedite examination or to eliminate stops at frontiers to authorize the officials or agents of an adjoining country to board international trains and carry out examinations therein on the territory of the other adjoining country, the competent authorities of the two countries shall determine, by a bilateral agreement, the conditions under which such operations shall be conducted.
3. On international trains, the examination of registered baggage, where not carried under the international transit system described in article 10, shall be conducted so far as possible while the train is in motion, provided that such examination is of assistance to passengers travelling with such baggage.
4. The procedure for applying the provisions of the present article shall be laid down in agreements concluded between the competent administrations of the Contracting Parties.