Hi All

[PJW]

Certainly worth investigating.
I am back from India after the Bank Hoiday and will be in a better position to do so after then.

I've had a quick look at the scheme plans where MCB-ODs have been commissioned (not a project I was involved in myself). In that case the overlap at the crossing is a POL ending before the crossing; the protecting signals are all controlled (with auto button); the previous signals are all distants and the previous stop signals all controlled. Not all that helpful as a comparison really.

It does seem to me that something doesn't add up with that sketch. I'm tempted to say either the Entrance/exit symbol is incorrect or the button should be an (A) - is there some way you can double check these?