19-09-2017, 07:45 PM
Yes PJW I realised that when I was practising and got to part 3! It's deceptive, on initial glance I thought I'd be able to answer it decently. I could only think of one thing and that was a sideways-on co-acting signal (Nottingham station). Or maybe an in-cab display but as the question asked for novel, PRACTICAL solutions I couldn't say that.

