Provide a concrete example of an engineering control specifically applied to reduce the risk of vehicle-as-a-weapon attacks at a perimeter, beyond simple bollards.

A concrete example of an engineering control specifically applied to reduce the risk of vehicle-as-a-weapon (VAW) attacks at a perimeter, beyond simple bollards, is a Hydraulic Wedge Barrier System. An engineering control is a physical modification to a workplace or environment designed to reduce exposure to hazards by physically removing or reducing the hazard itself, or by placing a physical barrier between the hazard and the protected area. In this context, the hazard is an attacking vehicle. This system consists of a robust steel plate or series of interconnected steel plates, typically flush-mounted within the roadway at a controlled access point. In its normal, permissive state, the wedg....