Patent ID: 7246791

Claim:
A roadway crash cushion comprising: a collapsible cushion portion comprising: a first panel member being cambered by at least one bend in the panel, the first panel configured to collapsibly fold during a collision and, due to shape memory, substantially return to an unfolded condition following a collision; and a second panel member being cambered by at least one bend in the panel, the first panel configured to collapsibly fold during a collision and, due to shape memory, substantially return to an unfolded condition following a collision, the second panel spaced apart from the first panel such that a collapsible cell is formed between the first and second panels; a ground-mounted longitudinal basetrack; and a plurality of substantially rigid diaphragms that are affixed to the first and second panel members such that the diaphragms each engage the basetrack for slidable movement thereupon.