Patent ID: 6382869
Filing Date: 2002-05-07
Classification: E01F

Abstract:
An above-grade trafficway barrier for arresting a vehicle of substantial mass traveling upon a roadway surface comprising:a pair of barrier masses arranged in spaced-apart relationship and separated by said roadway surface; said barrier masses having a frictional interface support slidably engageable on each side of said roadway surface so as to be movable in an angular direction with respect to said roadway surface and upon said roadway surface; an elongated flexible barrier having a pair of opposite ends connected respectively to each of said barrier masses and having a midsection extending across said roadway surface; said flexible barrier being subject to the transfer of kinetic energy applied thereto from the vehicle mass when impacting there against for movably drawing said barrier masses towards each other against inertial restraint and frictional restraint; and said pair of barrier masses are of equal size and weight so as to move in said angular direction at a similar speed and distance per second in a balanced manner in response to the vehicular mass when impacting against said midsection of said flexible barrier.