Abstract: A cable-barrier system that includes an anchor-body and terminal post which receive and retain one or more anchor-cables and are anchored to counter balance the force applied to the anchor body by one or more barrier-cables. The system also allows for the release of the anchor-cables during a collision with a vehicle.

Abstract: A roadway guardrail system including a rail and plurality of support posts assembled such that upon impact from a vehicle the rail moves upwardly with respect to the post. Fasteners may be used in the operative coupling of the rail to the support posts, such that upon impact the fasteners move upwardly with respect to the support posts and the rail moves upwardly along with the fasteners. The guardrail system may further include a reinforcing member that is slidable along the post and operatively coupled to the rail with the fasteners, such that the rail and fasteners slide along with the reinforcing member with respect to the support posts. The reinforcing member may be a spacer of various shapes, a washer, an additional rail section, or other type of member that allows the rail to slide upwardly with respect to the post.

Abstract: A barrier section which includes at least one connecting assembly at one or both ends of the barrier section, the connecting assembly having: at least one connecting-region which is positioned to be capable of engaging, or being engaged, with at least one connecting-region on an adjacent barrier section, in use; and the at least one connecting-region is configured to selectively engage with at least one connecting-region on an adjacent barrier section via at least one connecting device so the barrier sections have a fixed or pivotable relationship, with one another.

Abstract: A roadway guardrail system including a rail and plurality of support posts assembled such that upon impact from a vehicle the rail moves upwardly with respect to the post. Fasteners may be used in the operative coupling of the rail to the support posts, such that upon impact the fasteners move upwardly with respect to the support posts and the rail moves upwardly along with the fasteners. The guardrail system may further include a reinforcing member that is slidable along the post and operatively coupled to the rail with the fasteners, such that the rail and fasteners slide along with the reinforcing member with respect to the support posts. The reinforcing member may be a spacer of various shapes, a washer, an additional rail section, or other type of member that allows the rail to slide upwardly with respect to the post.

Abstract: A guardrail includes a cable routing device providing a tortuous path for at least one tensioned cable, the cable routing device includes a bar having a rotational axis and including a cable entry port having a circumference slightly larger than the cable which passes directly therethrough when the bar is in a first non-cable gripping orientation in which the diameter of the port (diametric width) is substantially orthogonal to the longitudinal axis of the cable, and wherein rotation of the bar about the axis effectively decreases the width of the port relative to the width of the cable to create a second cable-gripping orientation which provides the tortuous path, wherein the tortuous path through the bar is due to the relative decrease in the effective diametric width of the port and this provides sufficient frictional resistance to movement in relation to the cable during impact to facilitate impact energy dissipation.

Abstract: Crash attenuator guardrail apparatus includes an impact head and a backstop having a cable and guardrails supported by guardrail supports located between the impact head and the backstop. Frictional forces are applied to the cable to control and resist movement of the impact head toward the backstop and provide lateral resistance.

Abstract: An impact slider assembly for a guardrail which includes: a slider mechanism attached to a first rail and second rail which substantially conforms with a rail profile; and an integral means for attachment to the first rail, wherein the slider mechanism gathers telescoping rails whilst substantially maintaining the strength of the rails in a fully re-directing manner.

Abstract: A roadway guardrail system including a rail, a plurality of support posts, and a plurality of fasteners assembly to redirect an impacting vehicle and dissipate a portion of the impacting vehicle's energy. A plurality of support posts each includes a slot extending along its length aligning with apertures in the rail and engaging with the rail through the apertures with fasteners including reinforcing members slidable along the slots in the posts. Alternatively, the rail has a plurality of laterally extending slots aligning with apertures in support posts and engaging with the support posts through the apertures with fasteners including reinforcing members slidable along the slots.

Abstract: A hanger for a cable guardrail system is disclosed including a first portion with first and second seats on opposite sides of a post each seat capable of supporting a cable, and a second portion capable of engaging the end of the post. Also disclosed is a cable guardrail system including a plurality of posts, a plurality of hangers attached to at least a portion of the plurality of posts, and at least two cables supported by the seats on opposite sides of the post. The cable guardrail system may redirect an impacting vehicle and dissipate a portion of the impacting vehicle's energy.

Abstract: A roadway guardrail system including a rail and plurality of support posts assembled such that upon impact from a vehicle the rail moves upwardly with respect to the post. Fasteners may be used in the operative coupling of the rail to the support posts, such that upon impact the fasteners move upwardly with respect to the support posts and the rail moves upwardly along with the fasteners. The guardrail system may further include a reinforcing member that is slidable along the post and operatively coupled to the rail with the fasteners, such that the rail and fasteners slide along with the reinforcing member with respect to the support posts. The reinforcing member may be a spacer of various shapes, a washer, an additional rail section, or other type of member that allows the rail to slide upwardly with respect to the post.

Abstract: This invention relates to guardrails and guardrail impact heads for use in roading networks or vehicle road lanes requiring separation by a barrier. The invention provides an impact head for a guardrail including cable routing means adapted to form a convoluted path through which a cable can be threaded. The convoluted path that the cables must follow through the impact head of the invention restricts movement of the cable through the head, thereby providing sufficient friction to slow down the movement of the impact head during a vehicle impact. The invention also provides a method of constructing a guardrail including the steps of slidably interconnecting a plurality of rails and attaching them to posts, positioning an impact head according to any one of the preceding claims at one end of the slidably interconnected rails, threading at least one cable through the impact head and anchoring the cable to the ground.

Abstract: Crash attenuator guardrail apparatus includes an impact head and a backstop having a cable and guardrails supported by guardrail supports located between the impact head and the backstop. Frictional forces are applied to the cable to control and resist movement of the impact head toward the backstop and provide lateral resistance.

Abstract: An impact slider assembly for a guardrail including a slider connected to a first rail and a slider substantially surrounding the first rail, so that in use, the slider gathers and retains the first and any subsequent rails which telescopically overlap with each other during an impact.

Abstract: A roadway guardrail system including a rail, a plurality of support posts, and a plurality of fasteners assembly to redirect an impacting vehicle and dissipate a portion of the impacting vehicle's energy. Block-outs may be positioned in between the rail and support posts. A plurality of support posts each includes a slot extending along its length aligning with apertures in the rail and engaging with the rail through the apertures with fasteners including reinforcing members slidable along the slots in the posts. Alternatively, the rail has a plurality of laterally extending slots aligning with apertures in support posts and engaging with the support posts through the apertures with fasteners including reinforcing members slidable along the slots.

Abstract: A barrier section which includes at least one connecting assembly at one or both ends of the barrier section, the connecting assembly having: at least one connecting-region which is positioned to be capable of engaging, or being engaged, with at least one connecting-region on an adjacent barrier section, in use; and the at least one connecting-region is configured to selectively engage with at least one connecting-region on an adjacent barrier section via at least one connecting device so the barrier sections have a fixed or pivotable relationship, with one another.

Abstract: A guardrail includes a cable routing device providing a tortuous path for at least one tensioned cable, the cable routing device includes a bar having a rotational axis and including a cable entry port having a circumference slightly larger than the cable which passes directly therethrough when the bar is in a first non-cable gripping orientation in which the diameter of the port (diametric width) is substantially orthogonal to the longitudinal axis of the cable, and wherein rotation of the bar about the axis effectively decreases the width of the port relative to the width of the cable to create a second cable-gripping orientation which provides the tortuous path, wherein the tortuous path through the bar is due to the relative decrease in the effective diametric width of the port and this provides sufficient frictional resistance to movement in relation to the cable during impact to facilitate impact energy dissipation.

Abstract: An impact head for a guardrail includes cable routing means adapted to form a convoluted path through which a cable can be threaded. The convoluted path that the cables must follow through the impact head of the invention restricts movement of the cable through the head, thereby providing sufficient friction to slow down the movement of the impact head during a vehicle impact.

Abstract: A roadway guardrail system is disclosed having a plurality of posts capable of supporting at least one rod transverse to the posts, and at least one rod comprising one or more axially extending steel rods supported transverse to the plurality of posts. Each rod may include a plurality of axially extending steel rods supported transverse to the plurality of posts connected in a substantially end to end relationship. The steel rods may be connected using a coupler, and may be welded. The steel rods may be rebar.

Abstract: An impact slider assembly for a guardrail which includes: a slider mechanism attached to a first rail and second rail which substantially conforms with a rail profile; and an integral means for attachment to the first rail, wherein the slider mechanism gathers telescoping rails whilst substantially maintaining the strength of the rails in a fully re-directing manner.

Abstract: A hanger for a cable guardrail system is disclosed including a first portion with first and second seats on opposite sides of a post each seat capable of supporting a cable, and a second portion capable of engaging the end of the post. Also disclosed is a cable guardrail system including a plurality of posts, a plurality of hangers attached to at least a portion of the plurality of posts, and at least two cables supported by the seats on opposite sides of the post. The cable guardrail system may redirect an impacting vehicle and dissipate a portion of the impacting vehicle's energy.