Valehouse
An unusual feature of this layout is the interlaced sand drag, if the signalman became aware, by bell signal or otherwise, that a train descending from Woodhead was out of control he could divert it via the 'sand drag' hopefully assisting the driver to stop!
An office copy of Valehouse sbd from www.lymmobservatory.net/railways/sbdiagrams/sbdiagrams.htm coloured by me with information extrapolated from a drawing on that site kindly made available by Trevor Moseley and Simon Foster.
Valehouse
An unusual feature of this layout is the interlaced sand drag, if the signalman became aware, by bell signal or otherwise, that a train descending from Woodhead was out of control he could divert it via the 'sand drag' hopefully assisting the driver to stop!
An office copy of Valehouse sbd from www.lymmobservatory.net/railways/sbdiagrams/sbdiagrams.htm coloured by me with information extrapolated from a drawing on that site kindly made available by Trevor Moseley and Simon Foster.