They just couldn't help themselves, could they? Mind you, in slight mitigation, I suppose 'S' is already taken. Though we have managed without sleeper car stop signs until now these are appearing at approriate points over the network, along with car stop signs for every other eventuality - however unlikely.
Location: Edinburgh Waverley
Original line: North British Railway
Photographer: David Panton
Contact photographer: David Panton
Date: 31/10/2018
Image number: 66265