New Statutory Mass Limits from 1 August 2026: What Transport Operators Need to Know

From 1 August 2026, Australia's heavy vehicle industry will see one of the biggest changes to statutory mass limits since the introduction of the Heavy Vehicle National Law (HVNL). For many operators, these reforms mean carrying more payload without the need for additional accreditation. Combined with the ongoing ADR 80/04 (Euro VI) mass concessions, businesses operating modern low-emission vehicles could unlock even greater productivity.

At BTT Engineering, we've broken down what these changes mean for your business and how you can take advantage of the new regulations.

What Are the New Statutory Mass Limits?

From 1 August 2026, the Heavy Vehicle National Law (HVNL) will introduce new General Mass Limits (GML) by increasing them to align with the former Concessional Mass Limits (CML).

This means that operators who previously required Mass Management Accreditation simply to access CML weights will now be able to operate at those same weights under the new statutory GML.

The result is a much simpler mass management system with fewer administrative requirements while maintaining safety standards.

What's Changing?

The major changes include:

  • Concessional Mass Limits (CML) will be removed.

  • General Mass Limits (GML) will increase to match previous CML weights.

  • Operators will no longer require Mass Management Accreditation solely to access previous CML masses.

  • Higher Mass Limits (HML) will remain available through accreditation where applicable.

  • Performance Based Standards (PBS) vehicles and specific notices will continue to operate under their existing requirements.

For many transport businesses, this means easier access to increased payloads without additional accreditation costs.

What About ADR 80/04 (Euro VI) Vehicles?

One area creating plenty of discussion is the interaction between the new statutory mass limits and ADR 80/04 (Euro VI) vehicles.

The good news is that the Euro VI mass concessions continue alongside the new statutory limits.

These concessions are designed to encourage the uptake of cleaner, lower-emission heavy vehicles without reducing freight productivity.

Eligible ADR 80/04 vehicles can receive additional mass allowances, including:

  • Up to 7.0 tonnes on an eligible single steer axle.

  • 11.5 tonnes on an eligible twin steer axle group.

  • The ability to utilise the 0.5 tonne steer-to-drive mass transfer concession, where applicable under legislation.

These allowances are separate from the statutory GML increases and may provide further productivity benefits for operators investing in modern Euro VI vehicles.

Why Are Euro VI Mass Concessions Available?

Modern Euro VI emission technology requires additional equipment such as:

  • Diesel Particulate Filters (DPF)

  • Selective Catalytic Reduction (SCR) systems

  • Additional exhaust after-treatment equipment

  • Larger AdBlue systems

These systems improve emissions performance but increase vehicle tare weight.

The mass concessions help offset this additional weight so operators can maintain payload capacity while transitioning to cleaner technology.

Do I Still Need Mass Management Accreditation?

For many operators, the answer is no—provided you only required accreditation to access CML weights.

However, accreditation is still required where businesses wish to operate under:

  • Higher Mass Limits (HML)

  • Performance Based Standards (PBS) approvals requiring HML

  • Certain notices and access schemes

  • Alternative Compliance Accreditation (ACA – Mass) under the new Heavy Vehicle Accreditation (HVA) scheme

What Should Operators Do Before 1 August?

Now is the ideal time to review your fleet and operating practices.

We recommend operators:

  • Review current vehicle masses.

  • Confirm whether existing accreditation is still required.

  • Understand how the statutory changes affect permits.

  • Review PBS approvals where applicable.

  • Check whether Euro VI concessions apply to your vehicles.

  • Update internal procedures.

Making these changes early will help ensure a smooth transition once the reforms commence.

How BTT Engineering Can Help

The changes to statutory mass limits are a significant opportunity for operators to improve productivity while reducing compliance costs.

At BTT Engineering, we assist operators Australia-wide with:

  • Heavy Vehicle National Law (HVNL) compliance

  • HVA transition

  • PBS Certification

  • Heavy vehicle permits

  • Route assessments

  • Chain of Responsibility compliance

  • Safety Management Systems (SMS)

Whether you're operating a single semi-trailer or managing a national fleet, we can help ensure you're making the most of the new statutory mass limits.

Eddie van den Berg