Quadguard The QuadGuard System is a redirective, non-gating crash cushion that is ideal for shielding hazards located in areas with minimum clear zone. The system is designed for hazards ranging in width from 610mm to 2.3m. It consists of energy-absorbing cartridges surrounded by a framework of steel diaphragms and Quad-Beam™ panels. The system can be quickly restored after a design impact. Typically, sixty percent of the system is reuseable.