one9 is actually incorrect.
The RTA, then state debt recovery unit will send the fine to the driver once details have been provided by the rental company. If that fails to be paid then the fine is sent to the Rental car company, which is when they can legally charge the credit card to recover such cost.
As some may understand here, especially for red light camera offences etc etc, if a driver is not identified, i.e. a company registered car, rental car etc etc, instead of the vehicle owner losing points (this only happens for privately owned vehicles) the vehicle owner is slugged with a massive fine, I have seen them in the vicinity of $2,000 plus gst. At the end of the day, fines that end up coming back to the Rental Car company are charged via there credit card (as per RA T&C). Usually when that happens you are placed on a "Do Not Rent" database, and that will cause no end of troubles if you travel.
If you think just use a competitor, think again... Cendant own both Avis & Budget and use the same infrastructure, they also own Travelport/Orbitz, Wyndham group and many other companies that are in the travel industry, and YES, they share some common databases, such as risk customers, etc etc. I realise your rental car was from Hertz, however they have the same sort of contacts within the industry.
For the sake of a $100-200 fine, it is easier paid and dealt with before it turns into a nightmare.