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 highway crash attenuation system having W-beam rail elements attached to a plurality of vertical posts. An impact terminal with a feeder chute guides one or more of the W-beam rail elements through the impact terminal. The feeder chute has an impact shield extending along a traffic-facing side of the chute from an upstream-most end to a downstream-most end of the chute closing the traffic-facing side of the chute. The system also has an anchor cable release mechanism for releasing the cable downstream of the first vertical post and an improved first breakaway post.

Compressible shock absorber (100), characterized in that it includes at least one pair of shock absorbing elements (110) co-axial and telescopic reciprocally sliding along a longitudinal sliding axis (X); said shock absorbing elements (110) co-axially include a cavity (115) and include therein a compressible air volume during their axial sliding reciprocal between a first position of maximum axial extension and a second position of lower axial extension; said at least one pair of shock absorbing elements (110) includes air extractors (140) susceptible of allowing an extraction of the air from said internal volume progressive with the reduction of the axial extension following the impact of a vehicle against said shock absorber.

A self-restoring crash cushion including multiple diaphragms spaced along a length direction of the cushion, an elongated track adapted to be anchored to the ground that extends along the length direction under the cushion, the diaphragms being mounted to the track in a manner in which they can slide along the track when impacted by a moving vehicle or when the cushion is being restored, and means for dissipating energy of the moving vehicle.

An energy absorbing apparatus is provided and includes an outer shell having opposed ends and a left side wall, a right side wall and a hollow core. The shell includes a plurality of longitudinally spaced apart fold points positioned on the left and right side walls only located at a height in the middle region of the shell relative to the height of the left and right side walls. The fold points facilitate a controlled folding up of the left and right side walls and at least part of the shell, at or around, the fold points, during an end on impact.

An impact attenuator including an impact head, coupled to a first end of an energy absorption body, which energy absorption body is arranged for fixation to an external structure at a second end opposing the first end of the energy absorption body, configured to at least partly absorb or dissipate energy from a collision of an object with the impact head, and including a first part and a second part extending substantially lengthwise behind each other, wherein the first and second part are mutually moveable and including a first and a second cutting edge, wherein, the first cutting edge is arranged for splitting the first part of the energy absorption body upon impact of an object colliding with the impact head, and the second cutting edge is arranged for consecutively splitting the second part of the energy absorption body upon impact of an object colliding with the impact head.

Apparatus for absorbing energy when impacted by a vehicle includes guardrail forming structure for folding a guardrail including a pipe through which the guardrail passes and an elongated ramp-like guardrail engagement member in the pipe which cooperates with the pipe to apply compressive forces to the guardrail and fold the guardrail.

A guardrail extruder head includes: top and bottom feeder channels; an impact plate; a top plate connecting the impact plate to the top feeder channel; a bottom plate connecting the impact plate to the bottom feeder channel; a front extruder plate coupled between the top and bottom plates; a curved deflector plate attached to the front extruder plate and coupled between the top and bottom plates; a front brace on the front extruder plate near the curved deflector plate and coupled between the top and bottom plates; a back extruder plate opposite to the front extruder plate and coupled between the top and bottom plates; a front side plate and a back side plate positioned between the top and bottom feeder channels; a back brace on the back extruder plate near the feeder channels and coupled between the top and bottom plates; and an impact force transfer brace coupled to the front brace and the impact plate.

A crash cushion includes overlapping first and second rail sections coupled with a fastener. The first rail section is moveable relative to the second rail section from a pre-impact position to an impact position in response to an axial impact to the guardrail assembly. The first rail section includes an elongated slot aligned with the fastener and having a first length. A support post is releasably connected to the first rail section and is rotatable to a laid over position after the first rail section has moved a first travel distance, wherein the first length is greater than or equal to the first travel distance.

A system for displaying a desired reflective sheeting striping pattern on a traffic management device includes providing a portable panel having reflecting sheeting affixed to a face thereof, orienting the portable panel as desired, and affixing the panel to the device using fastener holes disposed about a perimeter of the panel. The displayed striping pattern may be easily changed by removing the panel from the device, turning the panel over to display an opposing side, on which is displayed a different striping pattern, and reattaching the panel to the traffic management device so that the opposing side of the panel is displayed, or by removing the panel from the traffic management device, rotating the panel by 90 degrees, 180 degrees, or 270 degrees, and then reattaching the panel to the traffic management device so that the same particular striping pattern is oriented in a different direction.