In article , MetroGnome
writes
No: an open level crossing is not counted as an obstruction in the
overlap (unless, of course, there's a problem such as a broken-down
car), so trains can be signalled up to a red signal right at the
crossing.

Thanks. What exactly do you mean by an "open" level crossing?

One open to road traffic to cross the line, irrespective of the crossing
tyoe.

If the latter, is any signalling consideration given to protecting road
traffic from trains overshooting, even if such protection isn't formally
part of the signal overlap

Not per se. However, an AHB will trigger if a train passes the
protecting signal at red, and similar signalling controls may be
installed at other crossing types.

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