The third line through the south could be the railway line to Krefeld and Mönchengladbach. This crosses the River Rhine and afterwards splits into the key line in addition to a branch to Moers and Xanten at Rheinhausen. North of your station, 7 tracks run to the River Ruhr crossing https://raymondtzdin.ktwiki.com/796619/top_guidelines_of_sanitätshaus_duisburg