| 摘要 |
A device for denying hostile vehicles access to a given zone, and which permits the passage of known, identified and approved vehicles, comprises a plurality of modular elements, which can be placed very rapidly, without major installation works, and which can be reused. It is constructed with an access control barrier 13, acted upon by an arm 14 with a trigger mechanism 9, 11, 17, 18, which can be acted upon by the arm 11, and a stop barrier 2, which is triggered by the action of the bar 16 on the bar 9, pushing a bolt 7 into the frame 1. <IMAGE>
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