The person who drives and controls the operation of the train, including those working lines where ATO (Automatic Train Operation) is provided.  Nowadays, London Underground has a requirement for abou [..]

Explanation and Photo.  

A machine provided on trains, built before the 1990s on London Underground, to supply low voltage auxiliary systems like car lighting, battery charging and control circuits.   It consists of a 630 vol [..]

The Tube Professionals' Rumour Network Tubeprune is an unofficial web site for professional railway people working for London Underground and for those interested in the London Underground railwa [..]

The original A Stock was built for the District in 1903 as the test for the electrification of the line and which were used on the Ealing and South Harrow line.  The present A Stock is the standard ty [..]

Automatic Fare Collection

The nickname given to the sidings at the north east corner of Ealing Common depot where the tracks are at a higher level than the rest of the depot.

a signal on London Underground which remains red, even if the route it protects is set and clear, until the train has occupied a track circuit close to the signal.  This form of control is used to for [..]

A device located in rear of buffer stops for absorbing a limited amount of the energy of a train which overruns the usual stopping point at a terminus or dead end.  The maximum speed for a tube train [..]

Automatic Train Operation, where the train speed is controlled by a combination of commands transmitted from the track or trackside and the operator (formerly the driver) only has to start the train a [..]