The HVA scheme operates within a nationally aligned framework supported by:
- Heavy Vehicle National Law (HVNL)
- Heavy Vehicle (Mass, Dimensions and Loading) National Regulation (MDL Regulation)
- Ministerial Guidelines for Heavy Vehicle Accreditation
- Safety Management System Standard (SMS Standard)
- National Audit Standard (NAS)
- Ministerial Standard for Alternative Compliance Hours.
Together, these instruments create a consistent and credible national approach to heavy vehicle safety assurance.

