Barrier system

A security barrier comprising:

• a plurality of support posts, and attached to a single face of each support post at least one elongated bracket comprising:
• mutually spaced fence member receiving channels comprising one channel of a second type and at least one channel of a first type aligned on each side of the one channel of the second type, the channel of the second type having a greater width than each channel of the first type, as measured along a length of the bracket, wherein each of the channels of the first type has a substantially semi-circular cross-section and wherein the channel of the second type has a linear central region between arcuate end regions;
• and
• a plurality of non-channel regions, the non-channel regions comprising an interconnecting region between each pair of adjacent channels, wherein the plurality of interconnecting regions lie in a common plane, the channels of the first and second types extending out of the common plane and parallel to the common plane, and
• wherein at least one of the interconnecting regions comprises an aperture, the aperture extending through the common plane and being configured to receive a fastener in a plane perpendicular to the common plane and a plane of the channels for securing the elongated bracket to the single face of the support post;
• a plurality of fence members orientated horizontally, each member of the plurality of fence members passing through a corresponding one of the fence member receiving channels of the at least one elongated bracket attached to each support post,
• wherein each fence member receiving channel of the first type has a width and depth approximately equal to a diameter of a corresponding fence member, and wherein the fence member receiving channel of the second type allows its respective fence member to slide upwardly along the support post and within the channel during an impact of a vehicle with the security barrier system.