I didn't have a car much of the time but I was within walking distance of the passenger terminal. The only train I saw was the southbound Ghan on Thursday but I did have a good inspection of the southern end of the yard.
I assume that the signalliing equipment at this end would all date from the construction of the line in 1980 and would follow then CR practice which is heavily North American influenced.
AS has a number of signals that would be called in NSW homes, as well as a number of signals we would call starters. As well as this the points at the southern end of the yard are power worked.
It certainly has become a quiet yard since the Darwin extension went through.