Today in official publicity, the term'tube' embraces the whole underground system, and the tube map now includes the other TfL railways such as the Docklands Light Railway and London Overground as well as the Emirates Air Line.
Today in official publicity, the term'tube' embraces the whole underground system. The tube map, voted a UK design icon in 2006, now includes the other TfL railways such as the Docklands Light Railway and London Overground as well as the Emirates Air Line.