Abstract: An inertial barrier system for attenuating the energy of errant vehicles. The system includes module means defining a frangible container having a generally inverted U-shaped configuration with an opened and enlarged upper portion and a closed lower portion. The upper and lower container portions receive a continuous mass of dispersible energy-attenuating material, and maintain the center of gravity of the mass above the lower portion of the container. This lower portion also defines a central void of substantial volume, for receiving a portion of the dispersible mass during the initial impact of the module means by an errant vehicle. Cover means are provided to close the module.

Abstract: An inertial barrier system for attenuating the energy of errant vehicles including inner module means defining an integral frangible container of generally wine glass-type configuration with an enlarged upper portion and a reduced lower stem portion for receiving a continuous mass of dispersible energy-attenuating material throughout the container height.

Abstract: An energy absorbing bumper for protecting an object from a collision is disclosed which has a compressible cellular core having a plurality of relatively large spaced apart cavities extending from the back side at least partially through the cellular core and a resilient outer skin enclosing the compressible core.