Generic ground milling machines such as road milling machines, recyclers, stabilizers or surface miners are usually used in road or roadway construction or in the extraction of natural resources located near the surface. They regularly comprise a machine frame with travelling means such as wheels or crawler tracks and an operator platform. The working device of a ground milling machine usually includes a milling drum rotatably mounted in a milling drum box and equipped with a plurality of tool devices on its outside jacket surface. A drive motor, usually a diesel engine, drives the ground milling machine, in particular the crawler tracks and the milling drum. During working operation of the ground milling machine, the tool devices of the milling drum are driven into the ground and millthe ground due to its rotation about a horizontal rotation axis. The loosened milled material is conveyed onto a transport vehicle by a conveyor device, which typically comprises a discharge belt and in some ground milling machines also an input belt, and is then transported away by said vehicle. Said discharge belt is frequently a suspension conveyor. Thus, the transport vehicle and the ground milling machine together frequently form a work train, which in most cases consists of a ground milling machine and a transport vehicle travelling either ahead of or behind the ground milling machine, depending on the direction in which the milled material is transported by the ground milling machine for transfer to the transport vehicle. During operation, the ground milling machine moves in its working