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Cab Signalling Signs

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Stratford International
Block marker number AF079 on the Channel Tunnel Rail Link at Stratford International. The "N" plate identifies this as an 'absolute stop' marker and an auxiliary signal is fitted to the post. (Photo taken 22 September 2014)


Machynlleth
Block marker number MH1102 at the west end of Machynlleth station, where ERTMS Level 2 cab signalling is in operation. Permission to pass this marker is presented to the driver in the form of a movement authority displayed inside the cab. (Photo taken 1 April 2011)


Westenhanger
Shunt marker number AF591 on the Up CTRL line at Westenhanger. An auxiliary signal is fitted below the violet coloured board to authorise trains to pass the marker under 'proceed on sight' conditions. A group of emergency replacement switches, for protection of the line, are mounted lower down the post. These are indicated by a sign bearing a red triangle, on both sides of the post. (Photo taken 17 May 2006)


Porthmadog
ERTMS shunt entry board number MH1232, located east of Porthmadog station. (Photo taken 31 March 2011)