A semi-trailer is provided, including a wheeled chassis having at least one wheeled axle at a rearward end and a retractable support at a forward end, a body comprising a cargo deck and an underride guard assembly that is movable in response to an upward force applied thereto.

A side underride guard assembly for a trailer has a plurality of support subassemblies coupled to first and second longitudinal main beams of the trailer. Each support subassembly has at least one cross member having a first end adjacent a first longitudinal side edge of the trailer and an opposite second end adjacent an opposite second longitudinal side edge of the trailer. Each support subassembly also has at least one vertically oriented plate coupled to the at least one cross member. A first longitudinal guard member is coupled to the first end of each of the cross members of the plurality of support subassemblies. A second longitudinal guard member is coupled to the second end of each of the cross members. The first and second longitudinal guard members are located below the first and second longitudinal side edges of the trailer, respectively, to prevent or inhibit side underride.

A reinforcement structure (10) comprising an inner member (14) at least partially secured within a shell (12), wherein the inner member is secured within the shell so that one or more abutment portions (18 of the shell are positioned in receiving portions (20) of the inner member, to create at least a partial press-fit condition between the inner member and the shell.

An underrun protection mounted on a vehicle body frame includes: a main body that is hollow in shape and has a longitudinal direction along the width direction of a vehicle; a connecting part connected to the vehicle body frame; a bracket provided farther toward a distal end in the longitudinal direction than the connecting part, inside the main body. The bracket includes a vertical panel disposed along the vertical direction, and a horizontal panel that is connected to a lower end of the vertical panel and is disposed along the longitudinal direction.

A side underride guard assembly for a trailer has a plurality of support subassemblies coupled to first and second longitudinal main beams of the trailer. Each support subassembly has at least one cross member having a first end adjacent a first longitudinal side edge of the trailer and an opposite second end adjacent an opposite second longitudinal side edge of the trailer. Each support subassembly also has at least one vertically oriented plate coupled to the at least one cross member. A first longitudinal guard member is coupled to the first end of each of the cross members of the plurality of support subassemblies. A second longitudinal guard member is coupled to the second end of each of the cross members. The first and second longitudinal guard members are located below the first and second longitudinal side edges of the trailer, respectively, to prevent or inhibit side underride.

Side underride collision guards configured to be incorporated beneath the cargo containment structures of large powered or unpowered vehicles are described. These collision guards are designed to absorb the force and kinetic energy of a lateral impact from a striking vehicle in an efficient manner. The guards disclosed are suited for incorporation into those vehicles with an elevated side structure, regardless if those vehicles are equipped with or without a sliding rear axle or axles. The guards comprise at least one impact force resisting structure per vehicle side, typically wire rope, oriented axially and mounted at or near each outboard side of the vehicle. The wire rope is attached to a plurality of support members connecting the linear structures to supporting members of the vehicle. The supported linear guard interaction members diminish the impact hazard presented to other roadway users that comprises the lower axial edges of the vehicle, typically a cargo box container, which is geometrically mismatched to the impacting vehicle, typically a passenger vehicle, as the container box edges are elevated above the front and rear bumper height of the impacting vehicle.

Side underride collision guards configured to be incorporated beneath the cargo containment structures of large powered or unpowered vehicles are described. These collision guards are designed to absorb the force and kinetic energy of a lateral impact from a striking vehicle in an efficient manner. The guards disclosed are suited for incorporation into those vehicles with an elevated side structure, regardless if those vehicles are equipped with or without a sliding rear axle or axles. The guards comprise at least one impact force resisting structure per vehicle side, typically wire rope, oriented axially and mounted at or near each outboard side of the vehicle. The wire rope is attached to a plurality of support members connecting the linear structures to supporting members of the vehicle. The supported linear guard interaction members diminish the impact hazard presented to other roadway users that comprises the lower axial edges of the vehicle, typically a cargo box container, which is geometrically mismatched to the impacting vehicle, typically a passenger vehicle, as the container box edges are elevated above the front and rear bumper height of the impacting vehicle.

A semi-trailer is provided, including a wheeled chassis having at least one wheeled axle at a rearward end and a retractable support at a forward end, a body comprising a cargo deck and an underride guard assembly that is movable in response to an upward force applied thereto.

A side barrier for a truck or trailer, the side barrier comprising at least one barrier member and at least two support arms between which the at least one barrier member hingedly extends, the at least two support arms being provided with hinges one for connection to the at least one barrier member and the other for connecting the side barrier to the vehicle in a position lying parallel to the longitudinal length of the vehicle, wherein all the said hinges are arranged with respectively parallel axes. Usually a second barrier member is present via which the other hinges connect the support arms to the truck or trailer. The side barrier is for lowering the window below pre-existing side barriers for preventing or reducing accidents involving vulnerable people such as pedestrians or cyclists and vehicles.

The present invention is related to an aerodynamic side skirt assembly for attaching a panel to a trailer or semi-trailer. The present invention comprise a coupler configured to be attached to a frame rail of the trailer and to a panel, a compressible element preferably with a curved shape used as a damper and a bracket with a preferably flat surface connected to the panel and a rib through the length of the bracket.