Measure expressed in meters corresponding to the circulation tracks as well as to the length of the maximum composition train that can circulate on a line in relation to the capacity of the crossing and precedence tracks. Today, in Italian Railways, a module is generally assumed to be no less than 650 m, despite the fact that on several lines it retains a lower value. A line is therefore called “a modulo”(“in module”) if its station facilities are. Even in expressions such as “putting a module” a line
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