European Rail Traffic Management System
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The European Rail Traffic Management System (ERTMS) is an EU-backed initiative to enhance cross-border interoperability and signalling procurement by creating a single Europe-wide standard for railway signalling.
The two main components of ERTMS are the European Train Control System (ETCS), a standard for on-board train control, and GSM-R, the GSM mobile communications standard for railway usage.
[edit] Companies
Companies developing ERTMS systems include Alstom, Invensys, Ansaldo Signal, Alcatel, Siemens and Bombardier.