HC Deb 27 July 1938 vol 338 c3117W
Mr. Bull

asked the Minister of Transport what are the objects and principal features of the London Passenger Transport Board's new system of automatic traffic control on the underground railways?

Mr. Burgin

There has been no change in principle in the signalling system in use on the board's railways, which embodies the automatic train stop. My hon. Friend may, however, have in mind the system of control by automatic telephones being installed at Leicester Square Station with the object of facilitating communication generally throughout the system.