Letter: Runaway trains
Sir: Connex South Eastern claim that when their trains come in half (report, 17 August), there is no danger to passengers. I am not convinced of that.
Almost all trains in this country use a compressed-air braking system which is designed so that, if a train should divide, the brakes will be put hard on, in both bits. That will happen automatically when the brake hoses are pulled apart.
But if "Networker" trains come uncoupled, that does not happen. The automatic couplers used between the two- or four-coach units have self-sealing connections.
As recent events have shown, if this happens the front part carries on with the driver unaware of what has happened. But what happens to the back part?
The severance of the control circuits will ensure that its traction power is cut off, but do the brakes come on? Or does it just roll on, driverless and brakeless?
And if the front part is stopped, what is there to prevent the back part from crashing into it?
Dr ARTHUR TARRANT
Twickenham, Middlesex
Subscribe to Independent Premium to bookmark this article
Want to bookmark your favourite articles and stories to read or reference later? Start your Independent Premium subscription today.
Join our commenting forum
Join thought-provoking conversations, follow other Independent readers and see their replies