Trials of London’s new £1bn Crossrail train fleet finally got underway last night following months of delay caused by an electrical explosion.
The first electric train to travel under its own power in the underground tunnels carried out a short test run at low speed.
Transport for London described it as a ‘successful maiden voyage’ and a ’major milestone for Europe’s largest infrastructure project.’
The Elizabeth Line train, travelling at less than 25mph, entered the tunnel at Plumstead, south east London, and travelled a short distance under the Thames towards Docklands.
Underground test runs of the new trains were halted in November after two electrical transformers blew up at a substation in east London.
The setback, blamed on a design error, stopped engineers from switching on the overhead cables which power the trains.
The £14.8bn Elizabeth Line is due to carry the first passengers on a section between Paddington and Abbey Wood, south east London, in December.