Help identifying an object

[jonnycoleraine]

Random wondering....

Any clue what the large grey screen/box type thing is?

Lisburn railway station, NI. Recent track renewal/signal renewal, don't think they were there before

 

[swt_passenger]

I think they’ll be screens to prevent the signal behind them being seen by a driver in the platform that the photo is taken from. (They’re more often black on Network Rail infrastructure.)

 

[jonnycoleraine]

Makes perfect sense, thanks!

Photo from further back on right hand platform suggests you're completely right!

 

[mr_moo]

Yep, pretty certsinn they will be 'blanking boards' to prevent the signal from being seen from the wrong line.