When I was looking it up today I see on the RACV that is hasnt been implimented anywhere yet - but... Transport SA says they will come into effect from July. Vic Roads already has the information as the standard on its website and the RTA have a info pamphlet out with the new info too - dated Feb 2009.
Whether they are law now - anyones guess though. '-_-
The good news is the NSW and Vic ones do mention sizes OR ages, so I might keep one in the car with me just in case.
Argh! These new laws are going to drive me batty. Think I might go with approved harness style belts through the back of the commuter now just to save me the hassle. Apparently there is a push to change all lap belts for lap/sash as well, which I cant do in the bus with the seats I have - but the harness will just go in hassle free.

