If you say so.
The original 1968 Campbelltown interlocking left those signals out, no doubt to save money.
Q1: Another stupidity about the 1968 remodelling; a few years before, the 1960 Standard Gauge line from Albury to Melbourne established a new standard loop length of ~900m (3000 feet). So why were the brand new refuge loops at Campbelltown built at the old ~400m standard?
See the 2012 signal diagram in signaldiagramandphotos.com for access to the down refuge
I wasn't involved in the 1968 redesign, however casting my mind back to then I could see some uses for the down refuge in those days:
1. Refuging of short south freights and pick ups
2. Refuging of Glenlee traffic. The up ones regularly used Ingleburn loop
3. Refuging of not so long freights
4. Campbelltown movements
5. The occasional suburban goes into the loop. Last time I did that was 2 years ago.
Last year an RTM special used it.
Not every south freight then or now is 900m. The evening oil used it regularly until recently and in the 70's there was often a freight in there waiting for the Aurora or SOP to overtake.
So, a couple of take away points here:
1. What ever you do or say, make sure you have the latest documentation.
2. What may appear stupid to you now maybe wasn't stupid then, and may not be stupid now.