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Irish railway signs

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Some notes I found.


RAD CH x (yellow border): Tune train radio to channel x. I think there's four different channels.

CAWS C1 or CAWS C2 (blue border). Set CAWS ADU to specified carrier. C2 on lines in and around the DART system, C1 elsewhere.

ETS: Start point of mechanical signalling

NO EMU TRAINS (amber border): Means what it says, no electric trains beyond this point, Used on the extremities of the DART system and the non-electrified junctions around Connolly.

White circle with black W in middle: Whistle board (NIR only)

Black and amber stripes: Whistle board (IE only)


The CAWS, RAD and ETS boards also have versions with a diagonal red line through them, indicating that CAWS, radio coverage or ETS is unavailable beyond that point.


Speed limits:

Permanent speed restrictions (PSRs) are indicated by a number contained within an octagon.


Temporary speed restrictions (TSRs) use four different signs:

The first is a triangle with blinking light and speed indication underneath. This is an advance warning board.

The second is the letter C with the TSR underneath (the commencement board)

The third is the letter R in a circle. This is a Reminder board. Not all TSRs will use this one, it's generally used at stations to remind the driver to stick to the TSR after departing the station.

The final one is the letter T. This is the termination board, marking the end of the TSR.

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