Docklands Light Railway (DLR) first opened in 1987. Since then, it has undergone several significant enhancements to reach its current 40km of track and forty-five stations. Today, it is used by over 100million people a year and is an essential route linking central London to key locations including Canary Wharf and the Olympic Park. With the DLR due to be refranchised, it was necessary to ensure existing assets were accurately

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