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The film shows the situation in the 90s. Today many things have changed, the electric block has now been almost completely replaced by the automatic one, the double track lines have almost all been trivialized, and the light signals in about twenty years will disappear, replaced by the ETCS level 2, which, taking up the concepts presented here for high speed, will bring the signaling exclusively in the driver's cabin dependent on radio impulses. Furthermore the DCO - Central Operations Manager - at that time limited to a few important areas or secondary lines, has now become multi-regional and in some states even national, from a single place a very large area is controlled with all the stations remotely controlled and without personnel. Consequently today all trains depart on the order of the train manager, and the figure of the Movement Manager with the red hat and the paddle is now a memory. Today the movement managers are closed in these control cabins and sometimes they don't even see the trains in motion from afar. The historical documentary on the functioning of the railways was made by Paolo Petronio.