Mass Management accreditation is a scheme under NHVAS (National Heavy Vehicle Accreditation Scheme) which allows approved operators to carry higher weight limits increasing efficiency and payload dividends through what is called Concessional Mass Limits (CML).
The Scheme is governed and monitored by the NHVR (National Heavy Vehicle Regulator) and by local jurisdiction and enforcement. Depending on which state the vehicle is operating there are in some cases different limits and exemptions.
For operators wanting to operate vehicle at Higher Mass Limits (HML), CML is a minimum requirement coupled with the Intelligent Access Program (IAP) in certain states. IAP is the introduction to GPS monitored pre-approved routes.