Both are able to transport 15-tonne flatracks or containers configured to ISO 20 feet standard and to load/offload them autonomously. Both may be supported with Side Rail Transfer Equipment (SRTE) for loading/unloading railway wagons. DROPS was a system designed to meet the very high intensity battles in Central Europe in the last decade of the Cold War. However it entered service after the collapse of the Warsaw Pact but nevertheless proved a versatile vehicle system on operations completely different from those originally envisaged.