via emergency000:
...A personal favourite of mine when I've done the occasional drive of a B-double up the Hume is passing Beveridge on the way back into Melbourne around 7-8 am on a Saturday morning. There's another of these signs there. So, of course, because it's a downhill gradient, I ensure I click my engine brakes on Can't have trucks speeding now, can we?...
Yep, its a nice feeling when yer got the backup of cool wheel brakes..
Some do overdo it though...