Freight train 44611 from Singen (Hohentwiel)/Germany via Schaffhausen-Bülach-Regensdorf to the Limmattal shunting yard, between Lottstetten and Rafz. In charge is locomotive Re 620 # 009 (Re 6/6 # 11609) "Uzwil" of the SBB, the only load is the "Silad 1" rail loading train of the SBB infrastructure, probably from Schaffhausen to the RBL. First is the tool car Xs 40 85 95 45 419-5, followed by the permanently coupled two car unit Xs 99 85 93 51 001, built by the Robel company. With this specialized cars, the long welded rails can be loaded or unloaded on the line.