Higher costs, stricter legislation and more stringent requirements for infrastructure call for more efficient higher-capacity transport solutions. Independent wheel suspension makes it possible to build double-deck trailers, resulting in a significant increase in capacity within the permitted standard dimensions. Independent wheel suspension is used successfully in the distribution of foodstuffs, mail and parcel delivery, construction transport and the transportation of clothing, equipment, retail goods and livestock. Because two double-deck semi-trailers can transport the same volume of products as three conventional trailers, this significantly reduces the number of transport movements required.