I travelled without a tag
As long as your licence plate number is linked to your account, your trip will be charged to your account with a small additional fee. This fee may differ on interstate toll roads.
If your licence plate number isn't registered to your account, you may receive a toll invoice or notice and be charged additional fees. To avoid this, make sure you add each of your vehicles to your account. You can do this by logging in online.
You can also buy a pass within 3 days of your trip.