A key feature of the Alt.1 baseplate is the outer frame encompasses the top plate, making the unit totally fail safe. The bonded rubber element provides resilience in all six degrees of movement which results in lower vibration and structure borne noise. This feature also dramatically reduces the dynamic stress on the anchoring elements as these elements (screwspikes / threaded rods) only pass through the outer base frame which is totally isolated from the top plate by the rubber element and virtually eliminates in-track fatigue failures and maintenance issues over a long period of time.