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Mobility and Transport

When talking about ERTMS, we presently talk about two systems (i.e. ETCS and GSM-R):

  • ETCS (European Train Control System), a train control standard, based on onboard equipment able to supervise train movements at all times and to stop the train if it moves beyond the permitted stopping point. Information sent to the cab is received from the trackside equipment, Eurobalises or radio, depending on the operation level. The driver’s response is continuously monitored and, if necessary, ETCS takes control and activates the emergency brakes.
  • GSM-R (Global System for Mobile Communications - Railways) is the European radio communications standard for railway operations. Based on GSM radio technology, GSM-R uses exclusive frequency bands for communications between the train and traffic control centres and the trackside devices (Radio Block Centres [RBCs]).

Therefore, ERTMS is a system contributing to interoperable railways throughout Europe. It allows a train equipped with an ERTMS onboard device produced by any supplier to run on track sections equipped with ERTMS devices made by other suppliers. This capability also implies the ability for any onboard equipment installed on any train to behave in the same way in the same circumstances.

ETCS Levels and Modes

The levels and operation modes are fundamental concepts of the ETCS system (European Train Control System). A short definition can be given as follows...

ETCS System Versions

The System Version is a concept of the ETCS system that refers to the version of the ETCS language in the information exchanged between both trackside...

Set of Specifications and Baselines

A Set of Specifications is a set of documents of different file versions as laid down in the Technical Specification of Interoperability for Control...

Subsystems and Constituents of the ERTMS

The ERTMS system is divided into 2 subsystems: onboard and trackside, as shown in the figure below.The ERTMS components corresponding to the ERTMS...