There is probably hardly a railway freight car in Europe that has not at some time rolled down the hump yard in Maschen, a suburb of Hamburg. It is here in Europe’s largest marshalling yard (and the second largest in the world) that up to 4,000 freight cars arrive daily and are arranged together to form new trains. The shunting engines are remote controlled and fitted with equipment supplied by the specialists for radio remote control systems - Cattron-Theimeg in Monchengladbach.