1994 Q4 Automatic Level Crossing- Interface with Signalling

[interesting_signal]

I did have to read the question a number of times before putting pen to paper, and wasn't sure if I had interpreted it correctly either. Level crossing 'upgrades' which I've come across in my job have usually been upgrading from an open crossing to a barrier crossing. I took the intention of the question to be along the lines of 'since there is heavier traffic, an open crossing is longer suitable (higher risk), so the crossing should be upgraded to a barrier crossing. Although there is not much to go on as to what type the existing crossing is. As you said it could already have been a barrier crossing.

I took the interface between the crossing and the signalling to be a broad definition, hence including things like wig-wags. I tried not do write just a 'brain dump' of everything about AHBC, but did feel at the end, it had sort of ended up a bit like that.

I probably wouldn't attempt this type of question in the exam either, because it took awhile to read (and re-read) and try interpret the meaning. Therefore I would have wasted precious time in the exam.

Re the Stott Report , it was published towards the end of 1987, and the first ABCL commissioned was in 1991. So not sure that explains the question. Either way I am just using it as a learning exercise. Currently working my way through the level crossing questions in the study pack (1994 onwards) so you should see some more attempts on this topic from me soon.

Thanks for the feedback.