Comment by boisterousness

See it in action: In this video[1], a signaller instructs a railfan in routing a couple of trains through Swindon (UK), using such a panel.

Shortly after the video was shot, this panel was decommissioned and removed. In 2018 it was brought back to life at the Didcot Railway Centre [2], where it continues in operation, backed by a simulator. Centre visitors can try their hand at operating the panel [3].

The panels "utilise square tiles called ‘Dominos’, patented by a Swiss company called Integra, to construct the panel diagram. Each Domino is 40mm square and has a small section of the layout on it, such as one signal, or one set of points. Many hundreds of small Dominos are then formed into a mosaic to build up the required panel diagram." [4]

Photo gallery [5]

[1] https://www.youtube.com/watch?v=76fAHAxv0Dw

[2] https://didcotrailwaycentre.org.uk/article.php/116/the-signa...

[3] https://www.youtube.com/watch?v=S1Jfm9Zqo_M

[4] https://didcotrailwaycentre.org.uk/article.php/680/more-abou...

[5] https://photos.swindonpanel.org.uk/