Outdoors now for a look at an interesting railway signalling system to protect against rockfalls. It's called Anderson's Piano, and it's now 140 years old and it's still in use on the UK national railway network. Tom Scott discovers why to this day, the 140 year old system hasn't been bettered. Here's the video... https://www.youtube.com/watch?v=mzAfich6mow

Posted by justin.noble at 2022-03-18 19:18:39 UTC