Abstract: 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.

Abstract: 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.

Abstract: A side under-ride collision guard is described configured to be mounted on a large trailer equipped with a sliding rear axle, comprising at least two linear fixed energy absorbing beam structures mounted axially with the trailer and attached to a plurality of support members connecting the beam structures to opposing ends of the trailer's floor beams, and at least two linear telescoping beam structures axially adjustable for position with respect to the fixed beam structures. The guard diminishes the impact hazard to other roadway users that is presented by the lower axial edge(s) of the cargo compartment in the two outboard regions that exist between the trailer's protected regions, which are typically the landing legs or prime mover rear tires to the front and the trailer's sliding axle assembly to the rear of the trailer.

Abstract: A side under-ride collision guard is described configured to be mounted on a large trailer equipped with a sliding rear axle, comprising at least two linear fixed energy absorbing beam structures mounted axially with the trailer and attached to a plurality of support members connecting the beam structures to opposing ends of the trailer's floor beams, and at least two linear telescoping beam structures axially adjustable for position with respect to the fixed beam structures. The guard diminishes the impact hazard to other roadway users that is presented by the lower axial edge(s) of the cargo compartment in the two outboard regions that exist between the trailer's protected regions, which are typically the landing legs or prime mover rear tires to the front and the trailer's sliding axle assembly to the rear of the trailer.

Abstract: A side under-ride collision guard is described that is configured to be mounted on a large trailer that has been equipped with a sliding rear axle, consisting of one or more energy absorbing beam structures axially adjustable for position attached to a multiplicity of parallel rails to diminish the impact hazard to other roadway users that is presented by the lower axial edge(s) of the cargo compartment in the region(s) that are present between the trailer's rear most tires and the trailer's rear under-ride guard and/or between a stationary forward under-ride guard and the trailer's front most tires.

Abstract: A side under-ride collision guard is described that is configured to be mounted on a large trailer that has been equipped with a sliding rear axle, consisting of one or more energy absorbing beam structures axially adjustable for position attached to a multiplicity of parallel rails to diminish the impact hazard to other roadway users that is presented by the lower axial edge(s) of the cargo compartment in the region(s) that are present between the trailer's rear most tires and the trailer's rear under-ride guard and/or between a stationary forward under-ride guard and the trailer's front most tires.