Artikel XI

1. Each State Party shall limit its armoured vehicle launched bridges so that, 40 months after entry into force of this Treaty and thereafter, for the group of States Parties to which it belongs the aggregate number of armoured vehicle launched bridges in active units within the area of application does not exceed 740.
2. All armoured vehicle launched bridges within the area of application in excess of the aggregate number specified in paragraph 1 of this Article for each group of States Parties shall be placed in designated permanent storage sites, as defined in Article II. When armoured vehicle launched bridges are placed in a designated permanent storage site, either on their own or together with conventional armaments and equipment limited by the Treaty, Article X, paragraphs 1 to 6 shall apply to armoured vehicle launched bridges as well as to conventional armaments and equipment limited by the Treaty. Armoured vehicle launched bridges placed in designated permanent storage sites shall not be considered as being in active units.
3. Except as provided for in paragraph 6 of this Article, armoured vehicle launched bridges may be removed, subject to the provisions of paragraphs 4 and 5 of this Article, from designated permanent storage sites only after notification has been provided to all other States Parties at least 42 days prior to such removal. This notification shall specify:
(A) the locations of the designated permanent storage sites from which armoured vehicle launched bridges are to be removed and the numbers of armoured vehicle launched bridges to be removed from each such site;
(B) the dates of removal of armoured vehicle launched bridges from and return to designated permanent storage sites; and
(C) the intended use of armoured vehicle launched bridges during the period of their removal from designated permanent storage sites.
4. Except as provided for in paragraph 6 of this Article, armoured vehicle launched bridges removed from designated permanent storage sites shall be returned to them no later than 42 days after the actual date of removal.
5. The aggregate number of armoured vehicle launched bridges removed from and retained outside of designated permanent storage sites by each group of States Parties shall not exceed 50 at any one time.
6. States Parties shall have the right, for the purpose of maintenance or modification, to remove and have outside of designated permanent storage sites simultaneously up to 10 percent, rounded up to the nearest even whole number, of their notified holdings of armoured vehicle launched bridges in each designated permanent storage site, or 10 armoured vehicle launched bridges from each designated permanent storage site, whichever is less.
7. In the event of natural disasters involving flooding or damage to permanent bridges, States Parties shall have the right to withdraw armoured vehicle launched bridges from designated permanent storage sites. Notification to all other States Parties of such withdrawals shall be given at the time of withdrawal.