Abstract: A highway guardrail terminal having horizontally extending guardrail elements mounted on a plurality of vertical posts. An anchor cable release mechanism having a cable release bracket attached to a W-beam rail element by cable release bolts has an arrangement of tapered slots and elongated openings to quickly release the cable release bracket from the W-beam rail element upon end-on vehicular impact to the terminal. The tapered slots have a geometry which lifts the bracket away from and out of a parallel alignment with the W-beam rail element.

Abstract: A safety barrier system, for placement along roadways and pedestrian paths, consisting of railing components that can be changed in elevation without the need for adjusting or resetting the posts or other type vertical support components.

Abstract: A vehicle restraining system using an electrical impulse to disable the control system of a targeted vehicle including a roadway module placed at a location to engage the targeted vehicle for delivering the electrical impulse to the vehicle; a roadside module for generating the energy required for the electrical impulse and delivering the energy to the roadway module; and an operator interface module for operating the restraining system. In addition, a method of disabling the control system of a vehicle by delivering an electrical impulse to the vehicle includes the steps of charging a vehicle restraining system; setting the charged vehicle restraining system to disable the next encountered vehicle; detecting the next encountered vehicle, and delivering the electrical impulse to the targeted vehicle.

Abstract: Systems and methods described herein provide for a flush-mounted vehicle control barrier having a shallow foundation. According to one aspect of the disclosure provided herein, a vehicle control barrier includes a sub-frame, a wedge plate, and an actuator mechanism that is coupled to the sub-frame and disposed within an interior space of the sub-frame.

Abstract: An impact absorption facility for road makes it possible to protect a road center, a road side, a road ramp, an entering side of a tunnel or an underground road, pillars, faith silk or others and to absorb the impact of vehicle collided and to decelerate during a collision by decreasing the impacts occurring due to the impact of a vehicle by installing the impact absorption facility even in a highway ramp, and it is possible to prevent a vehicle from entering an opposite road lane or going out of a road for thereby allowing the vehicle to run on a normal road and to return to a road. A traffic accident can be effectively prevented with the help of a lighting lamp or a reflection lamp when a vehicle approaches the impact absorption facility when a driver drives at night with sleepiness.

Abstract: The cushioned cover for traffic structures comprises various embodiments configured for installation over concrete traffic barriers (e.g., “Jersey walls,” etc.) or about vertical columns, posts, stanchions, etc., e.g., bridge support columns. The cover includes inner and outer layers formed of rubber, preferably using recycled tire material. A medial layer includes additional resilience. In one embodiment, the medial layer includes a plurality of closely spaced hemispherical elements, preferably formed of highly resilient polybutadiene material. In another embodiment, the center layer includes a plurality of closely spaced, pneumatically interconnected inflatable hemispheres. The traffic barrier covers may include planter box receptacles set into their upper surfaces when installed, and/or solar cells set into their upper surfaces to charge a storage battery for powering lighting set into the sides of the cover. Tread patterns may be provided in the outer surfaces of the traffic barrier covers.

Abstract: A reusable energy-absorbing crash attenuator comprises a base, a rail disposed on and extending along a length of the base, and a plurality of energy absorbing modules slidably disposed on the rail. Each of the energy absorbing modules comprises a first module portion and a second module portion which are attached together. Each of the module portions comprise plastic, preferably high density polyethylene (HDPE), and have a combination of concave and convex curvature. A plurality of fender panels are disposed in adjoining end-to-end fashion along each side of the length of the crash attenuator. The fender panels are arranged to slide together in telescoping fashion upon impact of the crash attenuator by a vehicle.

Abstract: A vehicle sensing parking barricade device includes: an RFID (Radio Frequency Identification) tag which is attached to a vehicle for identifying the vehicle; a barricade bar which limits entrance of the vehicle; an RFID reader which is installed in a portion of the barricade bar and receives information from the RFID tag to determine whether or not the vehicle is authenticated to be parked; and a motor driver which receives a signal from the RFID reader 25 to drive the barricade bar 10 to limit the vehicle entrance depending on the vehicle authentication.

Abstract: The invention relates to a restraint system for vehicles in the region of roads, which is combined with substantially panel-shaped screening and/or noise protection elements (1), wherein deflecting elements (2), which are made of concrete for example, are connected to supports (4) via connecting webs (3), and the screening and/or noise protection elements (1) are held between the lateral surfaces which extend in the longitudinal direction of the deflecting elements (2) and which face the screening and/or noise protection elements (1) and the lateral surfaces of the supports (4) which face the screening and/or noise protection elements (1). The screening and/or noise protection elements (1) are provided at their lower edge with open slots (6, 6?) in which the connecting webs (3, 3?) of the deflecting elements (2) engage.

Abstract: An energy absorbing system with one or more energy absorbing assemblies is provided to reduce or eliminate severity of a collision between a moving vehicle and a roadside hazard. The energy absorbing system may be installed adjacent various roadside hazards or may be installed on highway service equipment. One end of the system may face oncoming traffic. A collision by a motor vehicle with a sled assembly may result in shredding or rupturing of portions of an energy absorbing element to dissipate energy from the vehicle collision.

Abstract: In one embodiment, a safety trailer has semi-tractor hitches at both ends and a safety wall that is fixed to one side of the trailer. That side, however, can be changed to the right or left side of the road, depending on the end to which the truck attaches. A caboose can be attached at the end of the trailer opposite the tractor to provide additional lighting and impact protection. Optionally, the trailer can be equipped with overhead protection, lighting, ventilation, onboard hydraulics, compressors, generators and other equipment, as well as related fuel, water, storage and restroom facilities and other amenities.

Abstract: A non-lethal vehicle device provides for the selective, remotely-deployed controlled stop of a targeted vehicle regardless of wheel or undercarriage configuration. The device is comprised of a combination of a remote arm/safe mechanism, a remote deployment controller, spike/membrane deployment mechanism(s), a “speed bump” type housing that can protrude (be driven over until deployed) or be submerged, and one or more membranes with a plurality of spikes. A combination of sensors may provide independent deployment once armed.

Abstract: A dual arm barrier assembly comprising spaced-apart stanchions and a pair of barrier arms pivotally connected to a first stanchion for movement between closed and open positions. The barrier arms have distal end portions immediately adjacent to and out of engagement with the second stanchion when in the closed position during normal operation and when the vehicle is out of engagement with the barrier arms. The first barrier arm in the closed position is at a height corresponding to vehicle's windshield, and the second barrier arm in the closed position is below the first barrier arm and is at a height corresponding approximately to the vehicle's body or frame. The second stanchion engages the barrier arms only when the vehicle presses against barrier arms, thereby securely retaining the barrier arms in the closed position.

Abstract: A lightweight, portable roadway barrier is disclosed. The barrier (3) comprises a structural framework (5, 7, 9) for resisting collapse of the barrier in response to impact of a vehicle and panels (13) mounted to opposite sides of the barrier for deflecting vehicles on impact with the barrier.

Abstract: A rigid ram, joined to a structural element of a mechanism which receives and transmits the impact of a vehicle, is displaced along a deformable metallic profile of open section in the form of “U”, “C”, “?” or “?”, the ram having a partial or total intersection with the transversal section of the deformable metallic profile, and producing thereto plastic deformations which are propagated along the deformable metallic profile as the ram is longitudinally displaced along said deformable metallic profile.

Abstract: A connecting system (2) for connecting separating elements (1) for traffic areas has two connecting elements (3), each with two juxtaposed legs (5, 6). In each case, one leg (5) of a connecting element (3) is held between the legs (5, 6) of the other connecting element (3) in a positive-locking manner, as a leg (5) of the one connecting element (3) held between the legs (5, 6) of the other connecting element (3) has projections (9, 10) on both sides, which engage behind projections (9, 10, 11) disposed on the legs (5, 6) of the other connecting element (3). The legs (5, 6) of the two connecting elements (3) interlock with their projections (9, 10, 11) in hook form. In this way, the legs (5, 6) are not pushed apart when there is a tensile force acting on the connecting elements (3), but instead are held together or pushed towards one another.

Abstract: Disclosed herein are various embodiments of systems related to modular earth retaining wall systems. In one embodiment, among others, a precast retaining wall block configured for assembly into a retaining wall includes a front face portion, a web portion extending outwardly from a rear surface of the front face portion, and aligning elements. The web portion includes a vertical center portion and left and right protrusions extending outwardly from the lower sides of the vertical center portion. The left and right protrusions may be substantially triangular. The aligning elements extend downwardly from a bottom surface of the left and right protrusions for locking the precast retaining wall block to the vertical center portion associated with an underlying precast retaining wall block associated with an underlying row.

Abstract: A roller barrier security system includes a pair of cylindrical concrete roller barriers mounted on a support apparatus in an elevated position to enable movement of the roller barriers onto a roadway to block the movement of traffic. The roller barriers are retained by cables wrapped around the cylindrical rollers and secured by a solenoid. A secondary restraint in the form of pivoted catch members also prevents the rollers from leaving the elevated position. Each catch member is secured by a slide block coupled to a drop weight secured by a trap door controlled by a second solenoid. To allow movement of the rollers, the two solenoids are activated which releases the wrap-around cable and the trap door. The falling drop weight pulls the slide block away from the catch member to allow pivoting thereof, while the released cable allows the rollers to move by gravity onto the roadway surface.

Abstract: A wedge-shaped vehicle barrier, including a top assembly pivotably coupled to a bottom assembly; a mechanism coupled to the top assembly and coupled to the bottom assembly, where the mechanism moves the top assembly between a first position that is substantially horizontal and a second position at a first angle; and one or more flexible slings coupled to a distal portion of the top assembly and a distal portion of the bottom assembly, where the one or more slings prevent the top assembly from rotating beyond a second angle when the top assembly is engaged by a vehicle, the second angle being greater than or equal to the first angle.

Abstract: A bollard assembly is disclosed that includes an elongate hollow bollard having opposed first and second ends, a sidewall extending between the first and second ends, and through hole formed in the side wall. The assembly also includes a sleeve configured to receive and support a lower portion of the bollard, and a hollow cylindrical insert disposed within the lower end of the bollard. A pin protrudes outward from the insert sidewall, extends through the bollard through hole and engages the sleeve, whereby the assembly is retained in an assembled configuration. The bollard includes a prescribed breakaway line along which an upper portion of the bollard can be separated from the lower portion upon sufficient impact. Once the upper portion is broken away, the insert permits the lower portion of the bollard to be removed from the sleeve and replaced with a replacement bollard.

Abstract: A water-ballasted molded plastic barrier system incorporates barrier segments wherein each segment employs a sawtooth reflective design, designed to prevent the tire of a vehicle, impacting the barrier, from climbing up the side of the barrier segment. Adjacent barrier segments are attached together using an interlocking knuckle design, having a lug pin connection system. Wire rope cable assemblies are internally molded into each barrier segment to create an impenetrable cable fence. The wire rope cable assemblies include steel bushings which are molded into the interlocking knuckles to further strengthen the barrier system.

Abstract: A barrier that includes attack resistant pane(s) (see DEFINITIONS section). In this way, a person behind the barrier can be protected when they are outside. More specifically, the person behind the barrier is protected, at least to some extent, from both: (i) vehicular attacks; and (ii) blast (for example, bombs) and/or ballistic (for example, bullet) attacks. Also, the protected person can see what is happening across the barrier because of the attack-resistant pane(s). Also, if the barrier is unanchored then it can be moved from place to place, for example, by heavy equipment, so that the same barrier can be re-deployed at different outdoor locations (or indoor locations) on an as-needed basis. Preferably, the barrier also includes framing pieces that secure the attack-resistant pane(s) to the body of the barrier, with the framing pieces being covered on one side by an attack-resistant material (preferably, hardened steel).

Abstract: Disclosed anti-ram systems comprise at least one bollard section comprising a base of limited height and a plurality of spaced bollards extending upwardly from the base, which may be erected or installed on a paved surface such as asphalt, concrete, paver stones, etc., or on an unpaved surface such as soil, and need not be partially of fully buried, and yet can qualify for Department of State crash ratings previously assigned to buried bollard systems. Disclosed anti-ram systems also comprise a plurality of bollard sections and one or more connectors for interconnecting two or more of the bollard sections, and may also include an anchor or anchor system engaging at least each end of a bollard section not connected to another bollard section. The bollard sections may be filled with ballast and high friction structure may be attached to the bottom of the bollard sections to resist sliding after impact.

Abstract: A crash barrier system is provided that generally includes a hydraulic actuator driven piston operably connected to a hydraulic circuit and the crash barrier. In general, the hydraulic circuit includes a normal-UP and normal-DOWN section, an emergency-UP section, and an external pressure relief valve. In order to automatically provide corrective action in the event of an overpressure condition, the external pressure relief valve is connected to the hydraulic circuit. Upon occurrence of condition that causes the hydraulic fluid pressure to exceed a predetermined value, hydraulic fluid is released through the pressure relief valve to maintain the pressure at or below the predetermined value.

Abstract: Described are materials and structures for absorbing energy. The materials and structures are well suited for arresting aircraft and other vehicles, although their purposes need not be so limited. Also detailed are packaging and other solutions for maintaining system integrity, especially (but not exclusively) when foam glass or other aggregate is employed.

Abstract: An impact absorption facility for road makes it possible to protect a road center, a road side, a road ramp, an entering side of a tunnel or an underground road, pillars, faith silk or others and to absorb the impact of vehicle collided and to decelerate during a collision by decreasing the impacts occurring due to the impact of a vehicle by installing the impact absorption facility even in a highway ramp, and it is possible to prevent a vehicle from entering an opposite road lane or going out of a road for thereby allowing the vehicle to run on a normal road and to return to a road. A traffic accident can be effectively prevented with the help of a lighting lamp or a reflection lamp when a vehicle approaches the impact absorption facility when a driver drives at night with sleepiness.

Abstract: A barrier system is provided including at least a first front barrier and at least a second rear barrier. The second rear barrier is located a pre-determined spaced distance behind the front barrier. At least a part of said second rear barrier is substantially greater in height than the height of said first front barrier.

Abstract: A crash barrier system is provided that generally includes a hydraulic actuator driven piston operably connected to a hydraulic circuit and the crash barrier. In general, the hydraulic circuit includes a normal-UP and normal-DOWN section, an emergency-UP section, and an overpressure relief sub-system. In order to automatically provide corrective action in the event of an overpressure condition, the overpressure relief sub-system includes an external pressure relief valve that is connected to the hydraulic circuit. Upon occurrence of condition that causes the hydraulic fluid pressure to exceed a predetermined value, hydraulic fluid is released through the pressure relief valve to maintain the pressure at or below the predetermined value.

Abstract: Increased resistance to displacement of a barrier or barrier sections thereof in response to a lateral force without anchoring or bolting barrier sections together is achieved by providing an attachment arrangement near the top of an end of barrier sections which is capable of carrying a tensile force and developing that tensile force using a tightening bolt/nut arrangement located at deflection stops at lower corners of the barrier sections to develop a compressive force. The barrier sections are thus rigidly attached together such that a lateral force applied to one or more barrier sections is partially transferred to additional attached barrier sections effectively increasing the mass against which the lateral force is applied. The tightening bolt/nut arrangements are retained by and are captive to the respective barrier sections when barrier sections are disassembled from each other.

Abstract: An anti-ram system and method of construction having a shallow mounted base pad from which extend a plurality of bollards. Very little or only a shallow excavation is required for the base of the bollard system, which can be partially or fully assembled prior to bringing it to the installation site. The shallow mounting pad or base of the bollard system of this invention may be formed or constructed in various ways and of various materials, and in various configurations. The shallow mounting pad or base is constructed so as to have considerable mass.

Abstract: Embodiments of a safety trailer are shown and described. The safety trailer includes a trailer body defining a protected workzone, and having a first end and a second end and king pins at both the first and second ends. Also provided is a removable caboose engageable with either of the king pins at the first and second ends of the trailer body, the caboose having a fixed king pin plate, a nose portion and at least one axle and wheels. The fixed king pin plate distributes at least a portion of the force of a vehicle colliding with the safety trailer. The caboose is also provided with a caboose receiving member, the caboose receiving member comprising an alignment device. The caboose further comprises at least one of: a vertical adjustment member adapted to maintain a level ride height, provide additional ground clearance and level the caboose; and an auxiliary mechanism adapted to engage a caboose brake system.

Abstract: A bollard assembly includes a bollard, and a load transfer member disposed in the bollard, and a shock absorber disposed within the load transfer member. A fastener extends through the load transfer member and shock absorber, and secures the bollard, load transfer member and shock absorber to a ground surface. The load transfer member adjoins the bollard so as to be disposed between the shock absorber and the bollard, and the load transfer member is configured so that when an impact force is applied to the bollard, the force is transferred from the bollard to the shock absorber via the load transfer member. The deflection is absorbed by the shock absorber so that the anchor remains undeformed and the ground remains undamaged. Moreover, due to the resilience of the shock absorber, the bollard and load transfer member are returned to a normal, upright orientation upon withdrawal of the impact load.

Abstract: Increased resistance to displacement of a barrier or barrier sections thereof in response to a lateral force without anchoring or bolting barrier sections together is achieved by providing an attachment arrangement near the top of an end of barrier sections which is capable of carrying a tensile force and developing that tensile force using a tightening bolt/nut arrangement located at deflection stops at lower corners of the barrier sections to develop a compressive force. The barrier sections are thus rigidly attached together such that a lateral force applied to one or more barrier sections is partially transferred to additional attached barrier sections effectively increasing the mass against which the lateral force is applied. The tightening bolt/nut arrangements are retained by and are captive to the respective barrier sections when barrier sections are disassembled from each other.

Abstract: A separating element for traffic surfaces, which is preferably made of concrete, has at least one connecting element (5, 6) on each opposite end face (4), via which connecting element the separating element can be connected to an adjacent separating element (1, 20). At least one projection (41, 43) is arranged on one end face (4) and at least one recess (42,44) is arranged on the other end face, wherein a projection (41, 43) is inserted into a recess (42, 44) of an adjacent separating element (1, 20) in order to transmit forces acting in the plane of the end face (4) from one separating element (1, 20) to the adjacent separating element (1, 20).

Abstract: A vehicle barrier control device for limiting vehicular access to an area. The vehicle barrier control device includes a barrier system having an active position and a passive position and a control system adapted to move the barrier system between the active position and the passive position. In the active position, the barrier system prevents vehicles from passing through. In the passive position, vehicles are permitted to pass through. The barrier system includes a buttress, movable barrier plate, traffic control arm and a traffic indicating light. The control system comprises a traffic arm motor, programmable logic controller, variable frequency drive, and actuator. The barrier system is temporarily bolted to a sub-frame set in concrete. An actuator motor mounted to an actuator reduces the need for typical hydraulic components. Using a variable speed and reversible actuator motor the present invention provides high-speed movements of the barrier plate for emergency conditions.

Abstract: An apparatus for inhibiting the rotation of the tires of a vehicle comprising a housing comprising a ramp for oncoming vehicular traffic, the ramp also having a cavity adapted to releasably contain a net having spikes arranged at a leading edge of the net to engage the tires, the net further comprising a trailing edge that is attached to a releasable restraining element; a platform within the housing upon which the spikes are supported and that is moveable between spikes exposed and spikes unexposed positions; and an actuator that transmits an electronic command to expose the spikes to the vehicle.

Abstract: A bollard covering formed from a body, a body connector, a first center, a second center, a bottom, and a top is disclosed. The body connector and bottom further comprise post guide surfaces. In order to secure the bollard covering to the post, one or more holes are provided within the bottom, threaded to accommodate a set screw, or the like. Bollard covering elements are joined by welding, bonding, or mechanical fastening. Bollard coverings may be formed from standard inventory elements in order to create a standard inventory or a customized bollard covering product that may be economically configured on an individual bollard covering basis, or on small or large scale runs, with as much variation in optional components, features, and conveniences as may be required by the marketplace.

Abstract: A barrier type bollard includes: at least two blocks 10, 20, the block 10 being defined between two faces 11, 12 defining a wedge having an edge 13 and a dihedral angle ? of a value of less than ninety degrees, the face 12 being arranged as a sliding face 12?, the second block 20 having a sliding face 22? substantially complementary to the sliding face 12?, the two blocks 10, 20 being mounted in such a manner that their sliding faces 12? and 22? rest one on the other; an oblong element 30 of longitudinal axis 31 projecting from the face 11; and damper elements 40 for damping the sliding movement of the two blocks one on the other, the damper elements 40 being interposed between the two blocks. The bollard is applicable to impact-absorbing barriers against all kinds of body, and particularly but not exclusively, against vehicles.

Abstract: An inertial barrier includes a standard size plastic container and a single size insert that is supported by a ledge inside the container for supporting different amounts of sand or other dispersible granular energy absorbing material thereon to achieve different barrier weight configurations. The insert has an axially upwardly, radially inwardly extending top wall that permits some downward flexing of the insert inside the container as the weight of the material that is placed on the insert builds up, causing the sides of the insert to expand and push radially outwardly against the container side wall, preventing the material from leaking past the insert inside the container. Axially extending ribs may be provided in the container side wall for increased strength and rigidity.

Abstract: A load-limiting device is formed from a length of wire with a coil at each end defining eyes by which the device can be connected into a system adapted to be loaded in tension. The coils are of different diameter and the larger diameter coil is adapted to unwind by plastic deformation of the wire when the device is subject to a tensile load of a predetermined magnitude. The use of such devices in a system for deploying a vehicle arresting device across a roadway is also described.

Abstract: An access delay vehicle barrier for stopping unauthorized entry into secure areas by a vehicle ramming attack includes access delay features for preventing and/or delaying an adversary from defeating or compromising the barrier. A horizontally deployed barrier member can include an exterior steel casing, an interior steel reinforcing member and access delay members disposed within the casing and between the casing and the interior reinforcing member. Access delay members can include wooden structural lumber, concrete and/or polymeric members that in combination with the exterior casing and interior reinforcing member act cooperatively to impair an adversarial attach by thermal, mechanical and/or explosive tools.

Abstract: A bollard assembly is disclosed that includes an elongate hollow bollard having opposed first and second ends, a sidewall extending between the first and second ends, and through hole formed in the side wall. The assembly also includes a sleeve configured to receive and support a lower portion of the bollard, and a hollow cylindrical insert disposed within the lower end of the bollard. A pin protrudes outward from the insert sidewall, extends through the bollard through hole and engages the sleeve, whereby the assembly is retained in an assembled configuration. The bollard includes a prescribed breakaway line along which an upper portion of the bollard can be separated from the lower portion upon sufficient impact. Once the upper portion is broken away, the insert permits the lower portion of the bollard to be removed from the sleeve and replaced with a replacement bollard.

Abstract: Anti-ram systems according to embodiments of the invention comprise at least one bollard section comprising a base of limited height and a plurality of spaced bollards extending upwardly from the base. An anti-ram system according to embodiments of the invention may be erected or installed on a paved surface such as asphalt, concrete, paver stones, etc., or on an unpaved surface such as soil, and need not be partially of fully buried, and yet can qualify for Department of State crash ratings previously assigned to buried bollard systems. Disclosed anti-ram system also comprise a plurality of bollard sections and one or more connectors for interconnecting two or more of the bollard sections, and may also include an anchor or anchor system engaging at least each end of a bollard section not connected to another bollard section. The bollard sections may be filled with ballast and high friction structure may be attached to the bottom of the bollard sections to resist sliding after impact.

Abstract: A tire deflation device capable of being remotely operated to extend and retract a spike assembly into the path of a vehicle to controllably deflate one or more of its tires is described. An embodiment includes a self contained supply of pressurized air that is in communication with an actuator that operatively extends and retracts the spike assembly based on a signal received from a wireless remote control.

Abstract: A vehicle access control system includes an elongate, generally hollow, generally planar base platform having a first and a second distal end. A generally hollow enclosure is atop the base platform. A first lift gate is intermediate the enclosure and the first distal end of the base platform, while a second lift gate is intermediate the enclosure the second distal end of the base platform. A first lift arm is pivotally coupled to the first lift gate and extends generally perpendicularly away from a longitudinal axis of the base platform. Likewise, a second, opposing lift arm is pivotally coupled to the second lift gate and extends generally perpendicularly away from the longitudinal axis of the base platform. The base platform is configured for direct contact with a mounting surface. In addition, the vehicle access control system is transportable as a unit.

Abstract: An apparatus and a method for disabling a ground engaging traction device of a land vehicle includes at least one penetrator configured to breach the traction device, an articulated strap configured to move the apparatus between a retracted arrangement and an extended arrangement, a mass configured to deploy the apparatus to the extended arrangement, and a retractor configured to retract the apparatus to the retracted arrangement. The penetrators can be arranged in a triangular section which, in turn, can be deployable on any of its three sides.

Abstract: The invention relates to an access control device (20) comprising a first housing (21), an obstacle (25) mounted to move in translation in the first housing, a second housing (23) remote (34) from the first housing and receiving an electric motor-and-gearbox unit (26), a deformable link connected to the obstacle and co-operating with the unit, and a mechanical return device for returning the obstacle towards a position projecting out from the first housing, which return device is connected to the deformable link and is arranged in the second housing.

Abstract: A collapsible barrier (10) comprises: a first pair of members (12,14) pivotally coupled together at a first coupling (16); and a second pair of members (18, 20) pivotally coupled together at a second coupling (22); wherein each member (12, 14) of the first pair is pivotally coupled at a respective lateral coupling (24, 26) to a corresponding member (18, 20) of the second pair such that the members (12, 14, 18, 20) are movable from an erected configuration where the members of the first pair are mutually inclined at a first angular separation, and a collapsed configuration where the members of the first pair are mutually inclined at a second angular separation which is less than the first angular separation.

Abstract: A construction site fence, or barrier foot plate base unit or foot cover attachment for separating the barrier from traffic and to guide traffic. The base unit attaches a traffic delineator thereon top of the base unit. Also, the base unit may include a pad that is tapered away from the construction site barrier panel foot, creating a gentle sloping ramp, including a combination of the sloping ramp and the delineator mount.

Abstract: A vehicle impact attenuator includes a rail and at least one guide member moveable along the rail. At least a portion of the guide member is rotatable relative to the rail about a vertical axis by at least ±10° without binding the guide member against the rail. At least one energy absorbing element is located adjacent said guide member. A method of attenuating the impact of a vehicle is also provided.