Abstract: Two seats (1a, 1b) are mounted on carrier components (15, 16) in such a way that by means of a swinging movement they can be brought from a seating position one behind the other to a lying position one above the other. Synchronously with the swinging movement in the lying position. The seats are completely stretched out in a horizontal position by means of adjustment mechanisms (54, 60a/b, 61a/b, 63a/b, 64a/b, 65a/b, 67a/b, 68b, 70b). The device is especially suited for use in transportation systems. In another embodiment instead of single seats (1a, 1b) rows with two or more seats next to each other may be provided.