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