First new DLR train returns to service after modifications
The first of 54 new trains has resumed passenger journeys following a performance issue that led to their withdrawal.
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The first of 54 new Docklands Light Railway (DLR) trains has resumed passenger service after modifications were made to resolve a performance issue. The trains had been withdrawn from service in September 2025, shortly after their introduction, following the identification of a problem during conditions of low adhesion between the wheels and the rails.
Modifications and Testing
New DLR trains return to Stratford to Woolwich route
Trains were withdrawn in November due to braking issues, with TfL apologising for the delay in their reintroduction.
Transport for London (TfL) and the train manufacturer, CAF, have undertaken modifications to the affected trains. These changes include alterations to the braking system and the installation of new equipment designed to improve the grip between the wheels and the rails. TfL has also implemented measures across the DLR network to mitigate the effects of low adhesion at specific locations. Following an extensive testing and assurance programme, which included operating in a range of conditions, the first modified train has now returned to passenger use.
The initial train is currently operating on the route between Stratford International and Woolwich Arsenal. TfL is working with CAF and its suppliers to finalise the plan for introducing the remaining 53 new trains. The number of trains in service is expected to increase gradually as additional trains are brought back into operation.
We’re pleased that the first of our new DLR trains has returned to customer service following the completion of a thorough programme of modifications, testing and assurance. I apologise for the delay in reintroducing the trains, but am pleased this marks an important milestone in delivering a modern new fleet for the DLR.
Stuart Harvey, TfL’s Chief Capital Officer
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Fleet Features and Future Capacity
The new trains are equipped with walk-through carriages, air conditioning, live travel information displays, and charging points for mobile devices. Each train also includes three multi-use areas and three dedicated spaces for wheelchairs. The walk-through design is intended to increase passenger capacity by approximately 10 percent compared to the trains they are replacing. This new fleet will eventually replace the DLR's oldest trains, some of which have been in service for over 30 years. TfL anticipates that the increased capacity will support new housing and employment developments in areas including Stratford, Woolwich Arsenal, the Royal Docks, and the Isle of Dogs.
Questions this report answers
+Why were the new DLR trains withdrawn from service?
The new DLR trains were withdrawn in September 2025 due to a performance issue identified during conditions of low adhesion between the wheels and the rails. This problem affected their operation shortly after they were introduced.
+What modifications were made to the trains?
Modifications included alterations to the braking system and the installation of equipment to improve the grip between the wheels and the rails. TfL also introduced measures to reduce the effects of low adhesion at key locations on the DLR network.
+When will all 54 new trains be back in service?
The first train has now returned to passenger service. TfL is currently working with the manufacturer, CAF, to finalise the rollout plan for the remaining 53 trains, with further details to be confirmed. The number of trains in service will increase gradually.
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