A perimeter fence comprises at least one substantially horizontal base portion and at least one corresponding barrier portion, which is removably secured to the respective base portion, comprising a pair of substantially vertical posts and a panel supported therebetween. The fence limits access to a designated area and can be used, for example, for crowd control at concerts and other outdoor events, protest/demonstration crowd management and facility/infrastructure perimeter protection. The fence utilizes a modular design and an improved fastening and storage system; and thus can be readily assembled for mobile use and disassembled for storage and transport. Metal expanded wire mesh or solid panels are provided to maximize security and limit access. The fence is provided in various dimensions to reduce scalability and thus further limit access. A plurality of adjacent panels can be employed to extend the fence as necessary about the designated area based on the particular application.

Molded plastic barrier segments, typically water or sand-ballasted, are engineered to be attached together, end-to-end, in a barrier array, with innovative features which result in low rotation between attached barrier segments. Such a low rotation barrier array will, upon impact by a vehicle, act as a re-directive barrier, rather than a capturing barrier, which is an important safety feature in some crash scenarios, particularly with respect to more recent safety specifications required by many governmental highway agencies.

An end treatment array for crash attenuation includes a transition barrier module formed of side walls, end walls, a top wall, and a bottom wall, wherein the module walls together define an enclosed interior space. The end treatment array further includes a containment impact sled having an axially extending frame. The frame has a width sufficient to contain the transition barrier module within the frame when in an assembled configuration, and has an axial length which is at least one-half the length of the transition barrier module. The frame defines an interior volume, the purpose of which is to contain a substantial portion of the transition barrier module in the assembled configuration, and to contain debris caused by destruction of the plastic barrier modules in a vehicular impact. The containment impact sled is attached to the transition barrier module.

A barrier system is provided including first and at least second barrier elements. At least a portion of the first and second barrier elements have a hollow interior. Barrier connection apparatus is provided for releasably connecting an end of the first barrier element to an end of the at least second barrier element in use. The barrier connection apparatus has connection means provided on or associated with the same which are arranged to allow detachable attachment to each of the first and at least second barrier elements in use. The barrier connection apparatus is arranged and dimensioned so that at least a part of the barrier connection apparatus is insertable into the hollow interior portions of the first and second barrier elements in use in order to releasably connect the first and at least second barrier elements together.

A barrier element for bounding a carriageway including an elongated casing, having two opposing longitudinal side walls and an upper wall joining the two side walls; and at least one casing support structure located in the elongate casing and connecting to both the side walls. Additionally, a support structure for use in a barrier element.

A surface mount security barrier includes a non-metallic matrix supporting and substantially encapsulating metal ballast. The security barrier has a mass in excess of 6 tonnes and a ratio of metal ballast to non-metallic matrix in excess of 1.5:1 by mass. A method of manufacturing such a security barrier is also provided.

A stackable, portable, traffic barrier having a molded elongated body with a generally extruded triangular shape having a longitudinal axis; a separable base; a top; a first pair of opposing sides disposed between the top and the base; a second pair of arcuate opposing sides disposed between the top and the base; a plurality of vertically disposed fillable cavities disposed through the top of the body; and a plurality of caps, where each of the caps has a cross sectional shape suitable for functionally engaging a corresponding cavity.

A security barrier includes a plurality of barrier islands. Each barrier island has a concrete crash block having at least one pair of opposing side faces and external fixing elements on the opposing side faces. Attachments, which may be flexible attachments, extend between the external fixing elements of adjacent barrier islands of the security barrier. Each barrier island also has one or more load transfer element within the concrete crash block and, under load, the load transfer elements transfer load from the external fixing elements on one side of the concrete crash block to the external fixing elements on the opposing side of the concrete crash block.

An elongate barrier (3) comprises an outer shell in an elongate lower section of the barrier that defines a cavity (11) that receives and contains a pourable settable ballast material when the barrier is being manufactured. The barrier also comprises a solid block (15) of a ballast material in the cavity formed from the pourable settable ballast material.

An end treatment array for crash attenuation includes a transition barrier module formed of side walls, end walls, a top wall, and a bottom wall, wherein the module walls together define an enclosed interior space. The end treatment array further includes a containment impact sled having an axially extending frame. The frame has a width sufficient to contain the transition barrier module within the frame when in an assembled configuration, and has an axial length which is at least one-half the length of the transition barrier module. The frame defines an interior volume, the purpose of which is to contain a substantial portion of the transition barrier module in the assembled configuration, and to contain debris caused by destruction of the plastic barrier modules in a vehicular impact. The containment impact sled is attached to the transition barrier module.