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The Independent UK

Simon Calder

Why do train drivers need radio communication with signallers? GSM-R explained

Tunnel vision: Network Rail graphic on how GSM-R enables communication while trains are underground - (Network Rail)

Hundreds of thousands of rail travellers faced delays of an hour or more after the system that allows train drivers to communicate with signallers failed.

It is the Global System for Mobile Communications-Railway (GSM-R). Network Rail says it delivers “digital, secure and dependable communications between drivers and signallers”.

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