As follows some terms related to the operational activities carried out within the network of Ferrovie dello Stato Italiane Group

ATC (Automatic Train Control)
Automatic train control system. It's the technological and functional evolution of the Automatic Train Protection (ATP).
AV/AC (High Velocity – High Capacity)
System of specialised lines and vehicles for High Velocity and consequent High Capacity.
Set of railway lines with characteristics of importance for the volume of traffic and the transport relations carried out on it; it joins together centres or main nodes on the network.
ERA (European Railway Agency)
The European Union's (EU) agency that establishes the mandatory requirements for European railways and builders in the form of technical specifications for interoperability, which apply to the trans-European rail system. The ERA sets common safety objectives, methods, and indicators and follows Directive 2004/49 / EC as amended.
ERTMS (European Rail Traffic Management System)
System of functional and operational integration of the various railway networks defined within the European Union and which, at the operational control level, provides for the ETCS system.
ETCS (European Train Control System)
System that includes various national ATC (Automatic Train Control) operating systems. The ATC systems are made up of traditional and innovative signalling systems and can be realized through RSC (Continuous Signal Repetition) and RSDC (Continuous Digital Signal Repeater).
Production unit of a local railway company with an identifiable jurisdictional area on the railway network. They can belong to both the Infrastructure Manager and the transport companies.
Conventional location that defines a railway area usually coinciding with important metropolitan areas, characterized by a high density and relative complexity of medium-large stations and other railway installations interconnected by various lines that represent the continuation of the main itineraries that enter the same node as well as other lines. It is designed to facilitate the circulation management of different traffic flows and alternative routes, i.e. belts and service braces.
Transformation of a single-track line into a double track.
Infrastructure suitable for intermodal transport, mostly suitable for the exchange between carriers of large load units, with or without small area warehouses.
SCC/CTC (Command Control System/CTC Large network)
It's a system for regulating circulation and nodes with performance characteristics superior to traditional systems for centralized traffic control.
SCMT (Train Travel Control System)
First functional phase of the ATC that allows protection of the trains running at all times, activating eventual emergency braking, with respect to both the exceeding of the maximum speed allowed on the line and any undue breaching of one-way signals.
Tonnes km
Product of useful tonnage transported over kilometres travelled (tonn km). Unit of measurement therefore corresponding to the sum of kilometres travelled by the tonnes of goods transported in a determined period (indicator of commercial performance for the transport of goods).
Combined transport
Intermodal transport whose journey is mainly carried out by rail, waterways, or sea, while the initial and terminal routes are carried out on road. Combined transport uses rail on certain wagons and coded lines.
Intermodal transport
Transport using two or more modes of vehicles (land, rail, sea, or river) with load unit shifting between modes, without breaking the load itself: the load unit may be a road vehicle or an intermodal transport unit (container, mobile box, semi-trailer).
Trains km
Number of train events per km (tkm). Unit of measurement therefore corresponding to the sum of kilometres travelled by all trains provided within a certain time frame (performance indicator referring to Network Operator production).
Travelers km
Number of travellers multiplied by km (vkm). Unit of measurement therefore corresponding to the sum of the kilometres travelled by the total number of passengers of a transport service within a determined time frame (commercial performance indicator for passenger transport).
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