A barrier type bollard includes: at least two blocks 10, 20, the block 10 being defined between two faces 11, 12 defining a wedge having an edge 13 and a dihedral angle α of a value of less than ninety degrees, the face 12 being arranged as a sliding face 12′, the second block 20 having a sliding face 22′ substantially complementary to the sliding face 12′, the two blocks 10, 20 being mounted in such a manner that their sliding faces 12′ and 22′ rest one on the other; an oblong element 30 of longitudinal axis 31 projecting from the face 11; and damper elements 40 for damping the sliding movement of the two blocks one on the other, the damper elements 40 being interposed between the two blocks. The bollard is applicable to impact-absorbing barriers against all kinds of body, and particularly but not exclusively, against vehicles.