Lord Moylan (Con)

My Lords, I am not accustomed to making speeches on technological matters but, on this occasion, I feel I have some modest qualifications for doing so—although I must say in advance that I do so with a degree of trepidation, because nearly everything I know about driverless trains I have been taught by the Minister. I therefore sit in the uncomfortable position of being subject to not only his correction but his immediate correction the moment I sit down and he comes to respond. It is possible to get oneself into a tizz about these things called driverless trains when what one is in fact discussing is signalling. When I first got involved in railways, I thought that signalling was a system where arms went up and down and red and green lights flashed, but that is all in the past. Modern signalling is, in effect, a huge computer brain that fundamentally drives the trains. It tells the trains when to go, when to stop and how fast to go in between. Its purpose is to maintain a safe distance between trains as they travel, taking account of the speed and the track’s condition and nature. It is specific to the track. Although the noble Lord, Lord Snape, will find counterexamples—I am sure that he is right to do so—broadly speaking, it is safer to have the train driven by this great controlling brain than it is to have it driven by a human being. A large number of historical train accidents have been caused by driver inattentiveness. Indeed, in Committee on Monday, it was the noble Lord, Lord Snape, I think—it may have been another noble Lord—who drew attention to one cause of such accidents, driver tiredness, whereas the machine does not get tired. It knows what it is doing. It knows where every train is going and where it is in relation to every other. The noble Baroness, Lady Brinton, spoke of the person who remotely drives the train. There is not a person remotely driving the train; it is the great computer brain.