Alb Valley Railway
Highway construction in the mid-1930s brought some changes to the Alb Valley Railway. This meant that the line between Rüppurr and Ettlingen was moved to the east, so that the road and the highway followed a common route. The simultaneous upgrade of Herrenalber Straße in Rüppurr as a feeder road also required the rebuilding of the line between Dammerstock and Schloss Rüppurr.