How do you get a truck Licence?

To apply for an MR licence, you must:

1. Have held a class C licence, (except a learner licence) or equivalent for one year or more. …
2. Pass the MR knowledge test.
3. Pass an eyesight test.
4. Successfully complete HVCBA, or pass a Roads and Maritime driving test.

source https://www.paylessdrivingschool.com.au/how-do-you-get-a-truck-licence/