Re 420 # 144 (Re 4/4 II # 11144) of the SBB, first series with sissor pantograph, is pulling the reinforced IC 183 Stuttgart-Zürich, on the lap between Singen (Hohentwiel) and Zürich, between Lottstetten and Rafz. In the rear of the train is a first class panorama car Apm, not running on this line usually. The easter weekend and the interruption of the german Rheintal line north of Basel due to track works caused extremely high passenger frequencies on the axis Zürich-Stuttgart and vice versa.