During the recent polar vortex that brought temperatures as low as -60 F through the upper Midwest of North America, there were many news stories highlighting the extreme measures railways take to keep tracks clear of snow and ice buildup.
Currently, more than 1.7 million lorries carrying 22 million tons of cargo use the Channel Tunnel every year. This equates to more than a quarter of the trade between the UK and the rest of the European Union.