On holy thursday before easter, there are many passengers on the trains to the south, so the Eurocity 21 leaving Zürich main station at 03.09 PM for Milan is running with ETR 610 # 011 of Trenitalia (background) and RABe 503 # 015 of the SBB in multiple.
A classification yard is a railway yard found at some freight train stations, used to separate railway cars on to one of several tracks. From there the cars are sent through a series of switches called a ladder onto the classification tracks.