The invention relates to a rail transport system comprising at least two runners (20) having a shaped profile, a transport rail (61) and a transport carriage (2), the runners (20) with a shaped profile being extended over a staircase or over a flat section and the transport carriage (2) being moved along the transport rail (61). The transport carriage is provided with at least one electric motor. The runners (20) having a shaped profile and the transport rail (61) are stored in the transport carriage (2). The invention also relates to a method for constructing a rail transport system and for transporting at least one container for loading and/or unloading the galley of an aeroplane, and to a system for simultaneously loading and/or unloading the galley of an aeroplane.