Climate challenge to railways - The Kyoto to Copenhagen journey - Train to Copenhagen
Source: http://www.traintocopenhagen.org/
The climate has always presented a challenge to railway builders, not least when the Trans-Siberian was being laid across East Russia. Copious amounts of dynamite was necessary to make an impression on land gripped by permafrost, and was used to create a bed for sleepers and rails.
...If at train stops for any reason the staff have to set out three caps on the rails a kilometre from each end of the train. If another train approaches the caps explode under the trains wheels - warning the driver to make an emergency stop.
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