Basel, Strasbourg, Karlsruhe, Mannheim, Mainz, Koblenz, Bonn, Cologne and Dsseldorf are on which river?
Mannheim–Karlsruhe–Basel railway Mannheim–Karlsruhe–Basel railway The Mannheim–Karlsruhe–Basel railway is a double-track electrified mainline railway in the German state of Baden-Württemberg. It runs from Mannheim via Heidelberg, Bruchsal, Karlsruhe, Rastatt, Baden-Baden, Offenburg and Freiburg to Basel, Switzerland. It is also known as the Rhine Valley Railway () or the Upper Rhine Railway ("Oberrheinbahn"). The line was built as part of the Baden Mainline ("Badische Hauptbahn"). Between Mannheim and Rastatt it runs parallel to the Baden Rhine Railway ("Rheinbahn"). The Karlsruhe–Basel high-speed railway, called the "Ausbau- und Neubaustrecke Karlsruhe–Basel" in German (literally: "Upgraded and new line Karlsruhe–Basel"), has been under construction since April 1987. This
Mannheim–Karlsruhe–Basel railway the Mannheim–Karlsruhe section of line and S4 (Speyer–Bruchsal) on the (Speyer–Karlsruhe) section. Lines S31, S32, S4 and S41 of the Stadtbahn Karlsruhe operate between Bruchsal and Achern. Lines S32 and S4 continue from Rastatt to Achern. Regional-Express (RE) services of the Black Forest Railway have run hourly between Karlsruhe and Offenburg since December 2009; at times they run every half-hour; RE and Regionalbahn services together provide a half-hourly service between Offenburg and Basel. At each end of the line are two of the largest marshalling yards in Europe: Mannheim marshalling yard and Basel SBB marshalling yard in Muttenz. One marshalling