From what I remember you can possibly get whats called a section 10... I think it means that you are still charged with the offence but dont actually lose your licence.. Im not sure exactly how it works, but generally you're eligible for a section 10 dismissal if there are no aggravating circumstances (eg. offence was excessively negligent, or your action resulted in an accident and so on).
^^ Dont take this as gospel, i have a hazy memory of it from 4-5 years ago now.
This might be of help, I've had a few beers so I couldnt be bothered deciphering it
Taken from:
http://www.policensw.com/info/traffic/demeritfaq.html