An energy absorbing terminal is described that is made up of a plurality
of cells partially defined by cambered panels made of thermoplastic or
another suitable material. The panels are supported upon rectangular
frames. The cambered portion of the panels provides a predetermined point
of flexure for each panel and, thus, allows for energy dissipation during
a collision. The stiffness of the crash cushion may be varied by altering
material thicknesses and diaphragm spacing. In operation, a vehicle
colliding in an end-on manner with the upstream end of the energy
absorbing terminal will cause each of the cambered panels to bend
angularly at its point of flexure and, thus, cause the cells to collapse
axially. The use of thermoplastic, such as polyethylene results in a
reversible, self-restoring collapse for the terminal, meaning that the
terminal is reusable after most collisions.