Vehicle , in particular a commercial vehicle, having a confined cargo space and at least one door leaf (6a;6b) or window leaf bounding the cargo space, the vehicle comprising a system for locking the door leaf or window leaf, wherein the system comprises: - a primary locking device and a secondary locking device , wherein the primary locking device comprises a first locking member and a second locking member cooperating therewith, wherein the first locking member can be displaced relative to the second locking member between a release position, in which the primary locking device does not impede opening the door leaf or window leaf, and a locking position, in which this is indeed impeded, and comprises a primary operation device for displacing the first locking member between the release position and the locking position, and wherein the secondary locking device comprises a third locking member and a fourth locking member cooperating therewith, wherein the third locking member can be displaced relative to the fourth locking member between a release position, in which the secondary locking device does not impede opening the door leaf or window leaf, and a locking position, in which this is indeed impeded, and comprises a secondary operation device for displacing the third locking member between the release position and the locking position, wherein the second locking member , the third locking member and the secondary operation device are arranged on the door leaf or window leaf, characterized in that the first locking member is placed such that in its displacement towards the locking position it engages onto the secondary operation device in order to activate the latter for displacing the third locking member to the locking position. - a primary locking device and a secondary locking device , wherein the primary locking device comprises a first locking member and a second locking member cooperating therewith, wherein the first locking member can be displaced relative to the second locking member between a release position, in which the primary locking device does not impede opening the door leaf or window leaf, and a locking position, in which this is indeed impeded, and comprises a primary operation device for displacing the first locking member between the release position and the locking position, and wherein the secondary locking device comprises a third locking member and a fourth locking member cooperating therewith, wherein the third locking member can be displaced relative to the fourth locking member between a release position, in which the secondary locking device does not impede opening the door leaf or window leaf, and a locking position, in which this is indeed impeded, and comprises a secondary operation device for displacing the third locking member between the release position and the locking position, wherein the second locking member , the third locking member and the secondary operation device are arranged on the door leaf or window leaf, characterized in that the first locking member is placed such that in its displacement towards the locking position it engages onto the secondary operation device in order to activate the latter for displacing the third locking member to the locking position. <EOS>