The London Tube consists of 11 lines supplemented by two suburban train systems: the London Overground, a kind of commuter train, and the DLR (Docklands Light Railway), an automated light rail system.
The London Tube consists of 11 lines supplemented by two suburban train systems: the London Overground, a kind of commuter train, and the DLR (Docklands Light Railway), an automated light rail system.