Answer: It is best to make early contact with a lawyer as there are so many variables it is too hard to give a simple answer. One alert is if you do not know the identity of the negligent party who may have left the scene of the accident, then a lawyer needs to give Urgent notice to the Nominal Defendant. The Nominal Defendant stands in the place of the CTP insurer of the responsible party that cannot be found. This also relates to a vehicle that is unregistered.
If you are seriously injured, a lawyer can help with early notification to the insurer of the CTP Insurer of the responsible vehicle to help with rehabilitation. The sooner notification is given steps can be taken and if necessary liability can be investigated early and statements obtained from witnesses before they disappear or forget the details of the accident.