Hope this helps
NSW DRIVERS WHO DRIVE IN ANOTHER STATE
The RTA in NSW exchanges details of offences with other States and Territories.
This means that if a driver breaks a traffic law while they are driving in, say,
Victoria, details will be sent to NSW. The offence will be put on the driver’s
licence record in NSW and demerit points will be added.
DRIVERS FROM INTERSTATE
If a driver holds a licence from another State or Territory, they can incur points
on their licence from offences they commit in NSW. These may be added to points
they already have on their licence in their home State. If the driver gets 12 or
more points in this State in three years, the RTA may withdraw their right to drive
in NSW as a visitor.