Abstract: A frangible post captures and holds a cable anchor to a guardrail. The post breaks when struck by a vehicle, releasing the cable. The frangible post may include hinge members, which bias the post so that weakened sections are put in tension when the post is struck, thereby ensuring that the post breaks cleanly and the cable is released when the post is struck. A method of releasing a cable anchor includes impacting the post, biasing the weakened sections so that they are in tension, breaking the post, and releasing the cable anchor. The post may be configured with a notch to engage the cable anchor, which is then released from the notch as the post is broken.

Abstract: A crash cushion includes a plurality of resilient, self-restoring tubes each having a center axis and an interior surface. At least some of the tubes are positioned such that respective ones of the center axes are spaced apart in a longitudinal direction. The center axis of at least one tube is substantially perpendicular to a longitudinal axis extending in the longitudinal direction, with the tube defining a diametral plane intersecting and oriented substantially perpendicular to the longitudinal axis. The center axis of the tube lies in the diametral plane. One or more segments are positioned in the tube, with the segments, or portions thereof, disposed on opposite sides of the interior surface of the tube. Each of the segments or portions is symmetrically secured to the tube relative to the diametral plane, with the tube being substantially open between the opposing segments. Various methods of using and assembling the crash cushion are also provided.

Abstract: A delineator system includes an anchor having an end portion and a post extending along a longitudinal direction and having an end portion overlapping with the end portion of the anchor. The overlapping end portions are coupled together with an engagement member. A protective collar is moveable relative to the post and the anchor along the longitudinal direction from a non-installed position to an installed position. The protective collar is disposed over and covers the overlapping end portions and the engagement member when in the installed position. Methods of manufacturing and installing a post, and other delineator systems and delineator posts are also provided.

Abstract: An energy absorbing vehicle barrier includes a frame defining a compartment. In one embodiment, the frame includes a nose. An energy absorbing cartridge is disposed within the compartment. A retaining device is coupled to the frame, with the retaining device disposed above and extending over at least a portion of an upper surface of the cartridge. The retaining device may contact and engage the upper surface of the cartridge when the barrier is impacted by a vehicle. In this way, the retaining device substantially prevents movement of the cartridge in at least a vertical direction during the impact. Methods of using and assembling the barrier are also provided.

Abstract: A pavement marker includes a plastic base having an exposed upper surface, a reflector supported by the plastic base, and a metal rub rail coupled to the plastic base. The rub rail has an exposed rub surface positioned above the exposed upper surface of the plastic base. Methods of making and installing a pavement marker are also provided.

Abstract: A delineator system includes an anchor having an end portion and a post extending along a longitudinal direction and having an end portion overlapping with the end portion of the anchor. The overlapping end portions are coupled together with an engagement member. A protective collar is moveable relative to the post and the anchor along the longitudinal direction from a non-installed position to an installed position. The protective collar is disposed over and covers the overlapping end portions and the engagement member when in the installed position. Methods of manufacturing and installing a post, and other delineator systems and delineator posts are also provided.

Abstract: A crash attenuator includes a frame having a first frame member and a second frame member rigidly connected with a hinge assembly in a pre-impact configuration. The first and second frames are hingedly connected with the hinge assembly in an impact configuration, wherein the hinge assembly comprises a living hinge when the hinge assembly is in the impact configuration. A method of using the crash attenuator is also provided.

Abstract: A delineator system includes an anchor having an end portion and a post extending along a longitudinal direction and having an end portion overlapping with the end portion of the anchor. The overlapping end portions are coupled together with an engagement member. A protective collar is moveable relative to the post and the anchor along the longitudinal direction from a non-installed position to an installed position. The protective collar is disposed over and covers the overlapping end portions and the engagement member when in the installed position. Methods of manufacturing and installing a post, and other delineator systems and delineator posts are also provided.

Abstract: A ground anchor for a delineator includes a unitary plastic body having a receptacle shaped and configured for connection to a delineator post and a ground engaging portion extending from the receptacle along a longitudinal axis. The ground engaging portion includes a plurality of tapered blades. Delineator assemblies using the ground anchor, and methods of installing the ground anchor, are also provided.

Abstract: A guardrail system includes a guardrail, a support post, and a fastener joining the guardrail and the support post. The support post includes a hole receiving the fastener, a fastener retention mechanism, and a slot for the movement of the fastener during an impact. The fastener retention mechanism retains the fastener in the hole until a predetermined level of force is attained during an impact, after which the fastener is released and moves into the slot. Methods of moving the guardrail relative to the post are also provided.

Abstract: A crash cushion includes a plurality of resilient, self-restoring tubes each having a center axis and an interior surface. At least some of the tubes are positioned such that respective ones of the center axes are spaced apart in a longitudinal direction. The center axis of at least one tube is substantially perpendicular to a longitudinal axis extending in the longitudinal direction, with the tube defining a diametral plane intersecting and oriented substantially perpendicular to the longitudinal axis. The center axis of the tube lies in the diametral plane. One or more segments are positioned in the tube, with the segments, or portions thereof, disposed on opposite sides of the interior surface of the tube. Each of the segments or portions is symmetrically secured to the tube relative to the diametral plane, with the tube being substantially open between the opposing segments. Various methods of using and assembling the crash cushion are also provided.

Abstract: A ground anchor for a delineator includes a unitary plastic body having a receptacle shaped and configured for connection to a delineator post and a ground engaging portion extending from the receptacle along a longitudinal axis. The ground engaging portion includes a plurality of tapered blades. Delineator assemblies using the ground anchor, and methods of installing the ground anchor, are also provided.

Abstract: A crash attenuator includes a frame having a first frame member and a second frame member rigidly connected with a hinge assembly in a pre-impact configuration. The first and second frames are hingedly connected with the hinge assembly in an impact configuration, wherein the hinge assembly comprises a living hinge when the hinge assembly is in the impact configuration. A method of using the crash attenuator is also provided.

Abstract: A crash cushion includes a plurality of resilient, self-restoring tubes each having a center axis and an interior surface. At least some of the tubes are positioned such that respective ones of the center axes are spaced apart in a longitudinal direction. The center axis of at least one tube is substantially perpendicular to a longitudinal axis extending in the longitudinal direction, with the tube defining a diametral plane intersecting and oriented substantially perpendicular to the longitudinal axis. The center axis of the tube lies in the diametral plane. One or more segments are positioned in the tube, with the segments, or portions thereof, disposed on opposite sides of the interior surface of the tube. Each of the segments or portions is symmetrically secured to the tube relative to the diametral plane, with the tube being substantially open between the opposing segments. Various methods of using and assembling the crash cushion are also provided.

Abstract: An end terminal for a guardrail system includes an elongated guardrail beam and a flattening or reshaping device defining a channel having an inlet and an outlet vertically aligned along a longitudinal axis. The guardrail beam is moveable along the longitudinal axis through the channel from the inlet to the outlet. An anchor is vertically spaced below the outlet, with a tether coupled between the anchor and an end portion of the guardrail beam. The tether is adapted to pull the guardrail beam downwardly from a first height at the outlet to a second height vertically spaced from the first height free of any engagement with any other structure once the guardrail beam exits the outlet, and with a bending of the deformed guardrail beam in only one direction after the deformed guardrail beam leaves the outlet. Methods of assembly and operation are also provided.

Abstract: A pavement marker includes a plastic base having an exposed upper surface, a reflector supported by the plastic base, and a metal rub rail coupled to the plastic base. The rub rail has an exposed rub surface positioned above the exposed upper surface of the plastic base. Methods of making and installing a pavement marker are also provided.

Abstract: A delineator system includes an anchor having an end portion and a post extending along a longitudinal direction and having an end portion overlapping with the end portion of the anchor. The overlapping end portions are coupled together with an engagement member. A protective collar is moveable relative to the post and the anchor along the longitudinal direction from a non-installed position to an installed position. The protective collar is disposed over and covers the overlapping end portions and the engagement member when in the installed position. Methods of manufacturing and installing a post, and other delineator systems and delineator posts are also provided.

Abstract: A frangible post captures and holds a cable anchor to a guardrail. The post breaks when struck by a vehicle, releasing the cable. The frangible post may include hinge members, which bias the post so that weakened sections are put in tension when the post is struck, thereby ensuring that the post breaks cleanly and the cable is released when the post is struck. A method of releasing a cable anchor includes impacting the post, biasing the weakened sections so that they are in tension, breaking the post, and releasing the cable anchor. The post may be configured with a notch to engage the cable anchor, which is then released from the notch as the post is broken.

Abstract: A crash attenuator for decelerating an impacting vehicle includes a first end that can be releasably secured to a vehicle, and a second end that is longitudinally spaced from the first end. The second end includes an impact member that is movable in the longitudinal direction from a pre-impact position to an impact position. At least a pair of spaced deformable attenuator members extend in a longitudinal direction and have a proximal end and a distal end. The proximal ends are staggered downstream from the impact member in the pre-impact position. At least a portion of the deformable attenuator members are bent in a non-outboard direction as the impact member is moved from the pre-impact position to the impact position.

Abstract: An end terminal for a guardrail system includes an elongated guardrail beam and a flattening or reshaping device defining a channel having an inlet and an outlet vertically aligned along a longitudinal axis. The guardrail beam is moveable along the longitudinal axis through the channel from the inlet to the outlet. An anchor is vertically spaced below the outlet, with a tether coupled between the anchor and an end portion of the guardrail beam. The tether is adapted to pull the guardrail beam downwardly from a first height at the outlet to a second height vertically spaced from the first height free of any engagement with any other structure once the guardrail beam exits the outlet, and with a bending of the deformed guardrail beam in only one direction after the deformed guardrail beam leaves the outlet. Methods of assembly and operation are also provided.