A factory on rails – the first of its kind to be used on Britain’s railways – will slash years off the time it will take to electrify the Great Western main line.
With 235 route miles to electrify from Maidenhead in the East* to Swansea in the West - and many thousands of trains to keep running while the work is done - Network Rail is working with German manufacturer Windhoff to build the High Output Plant system (HOPS) train to do the job
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