There is disclosed a method and a gas actuated retarder system for railway cars to control the rolling speed of a railway car along a first and second running rails of a track section. The system also includes a pump to controllably dispense the insulin from a reservoir to the body of the patient based on the residual insulin determined by the RI determination unit. Furthermore, a mid-line along a length of the pocket intersects a mid-line of at least one of the two or more bands. In order to obtain improved stability, the transport container, which is constructed in a modular manner, may be provided with a concealed frame of metal tubes.