The 3rd line through the south could be the railway line to Krefeld and Mönchengladbach. This crosses the River Rhine and after that splits into the key line in addition to a department to Moers and Xanten at Rheinhausen. North on the station, 7 tracks run to the River Ruhr https://weisheitsnews.de/die-rolle-von-sanitatshausern-bei-der-unterstutzung-der-hauslichen-pflege-in-duisburg/