A trailer-train trailer having a carrying frame for accommodating at least one material transport cart carried along in a trailer train, the carrying frame including a centrally arranged chassis having an axle, two wheels laterally supported on said axle, and an arrangement, for accommodating the material transport cart, is provided in front of and behind the chassis in a direction of travel. The arrangement for accommodating the material transport cart includes ascending and descending ramps for supporting the swiveling and/or fixed rollers of the trolley at least one material transport cart. A height-adjustable arrangement for locking the material transport cart may be arranged at the two lateral ends of the housing transversely to the direction of travel.