If you wish to become a heavy vehicle specialist certifier you will need to qualify and be appointed by the Transport Agency.
The info pack outlines the different certification categories and the qualifications required for each one. It also explains about any further qualifications or courses that may be required, the examination process and the applicant interview process for some categories.
The syllabus outlines required and recommended reading for each certification category.
These documents can now be found on the NZ Transport Agency's vehicle inspection portal(external link).