Case Studies

Transport Case Study - Docklands Light Railway (DLR)

Company Name: Thales

Location: London’s Docklands

Transport Case study

Docklands Light Railway (DLR)

The problem

Economic and building development in London’s Docklands area during the early 1990s created a significant increase in transit, straining the existing DLR system. 34,000 passengers a day were commuting on a system designed for 22,000, and the original train control system just couldn’t cope.

The solution

Our state-of-the-art SelTrac CBTC communications-based train control, offering moving-block technology, was chosen as the best to safely manage DLR’s growing passenger traffic. The line was completed from Canning Town to London City Airport. Today, the system consists of 32 km of double track with 38 stations, 94 fully automatic trains and two depots.

The track layout includes a complex junction area where the major lines of the system converge, with SelTrac CBTC providing seamless junction management for safe and efficient transport operation. The signalling system comprises an arrangement of three vital interlocking/train control subsystems, data transmission equipment, 75 mainline point machines, 94 on-board controllers for ATP/ATO operations and 85 passenger information displays. The Control Centre at Poplar is equipped with a multi-workstation for train regulation and traffic management.

The results

With a driverless operation and seamless junction management, plus a strong emphasis on reliability and expandability, the DLR was soon accommodating 48 million passengers. Thanks to our strong teamwork ethic, we were instrumental in the opening of the Lewisham extension two months ahead of schedule and the London City Airport line on schedule. As passengers numbers continue to increase, our SelTrac CBTC will enable DLR to keep pace with demand.


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