Tom Scott | After 140 years, this old technology still keeps trains safe @TomScottGo | Uploaded 2 years ago | Updated 9 minutes ago
"Anderson's Piano" is a set of wires and signals at the Pass of Brander, near Falls of Cruachan in Scotland, that try to detect when there might be a boulder on the track. They're 140 years old, and so far no-one's been able to find a better solution — but they're working on it.

Thanks to all the team at Network Rail and Scotland's Railway: scotlandsrailway.com
Edited by Michelle Martin youtube.com/@OnTheCrux

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