rrier systems, e.g. wire rope barriers, are generally more forgiving than other types because most of the impact energy is dissipated by deflection of the barrier and lower impact forces are imposed on the vehicle and its occupants.
All wire rope barriers approved for use on state highways have different deflection characteristics for a given NCHRP 350 test level.
(b) Semi-rigid Systems
Semi-rigid barrier systems, e.g. W-Beam and Thrie-Beam barriers, are the most common type of road safety barri