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Train Set: Track Three
99% Invisible
How to Slow Down Trains on Short Notice
In the mid-1800s, an English mechanical engineer started to game out potential audible alerts that could be used on even the foggiest day. The solution he came up with was explosives. And oncoming trains would just roll over a set of these, they detonate with a series of bangs - pierces the steady train noise and gets the attention of whoever is at helm.
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