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The introduction of three-car trains on the Docklands Light Railway (DLR) was a hugely complex task carried out on a live urban rail route.
The project included extending platforms across the network, rebuilding two stations, strengthening viaducts and bridges, and installing new junctions. A total of 19 stations needed significant remodelling or platform extensions, while maintaining an operational service.
This was achieved by rethinking traditional construction methods, introducing off-site construction wherever possible. Pre-cast concrete beams and modular platform units were used, and at East India station this approach allowed 60 metres of platform extensions and back screens to be completed in 48 hours.
Crossing five London boroughs, the DLR covers a dense residential and commercial swathe of the city. Achieving this project to schedule, and on budget, depended on effective communication and construction. It also aimed to encourage local procurement and training.
The completed project has increased passenger capacity by 50 per cent on the busiest routes, reduced travel times, and brought significant regeneration to this part of London ahead of the 2012 Olympic Games.
"A significant upgrade which will improve the experiences of a huge number of commuters."