That pair looks a bit bent. Using the desktop browser version again, so maybe old, a little further east and you see this:
https://www.google.com/maps/place/3...0:0x0!8m2!3d-37.6518476!4d144.933895?hl=en-AU
yellow and red outside a tyre place and further east a pair of yellows in one yard and a red one in the next.
The Wollert BP / McDonalds drive thru is opposite your gate and they'd likely have coverage there. Is it likely someone regularly going through that just noticed how little activity there was and took the opportunity?