Heavy vehicle safety and compliance: a plain-English guide for operators

By AJ Sakai, Director, Transport & Logistics Hub (TLH) · Published

If you run trucks in Australia, compliance isn't paperwork for its own sake. It's how you prove, to the regulator, your customers and a court if it ever comes to that, that you're running safely. This guide covers the main pieces in plain English: the chain of responsibility, what changed in 2026, and the everyday records that do most of the work.

The law: the Heavy Vehicle National Law (HVNL)

The HVNL covers heavy vehicles over 4.5 tonnes GVM in every state and territory except Western Australia and the Northern Territory, which run their own systems. It's administered by the National Heavy Vehicle Regulator (NHVR).

An amended HVNL commenced on 1 August 2026. The changes include a new Heavy Vehicle Accreditation (HVA) scheme replacing NHVAS, a bigger role for safety management systems, and updates to fatigue and work diary rules, mass and loading, and new "unfit to drive" provisions. If you haven't reviewed your systems since the change, now's the time.

Chain of responsibility (CoR): it's not just the driver

Under CoR, everyone whose actions can affect the safety of a heavy vehicle has a legal duty. That includes:

  • Employers and prime contractors of drivers
  • Operators of the vehicle
  • Schedulers of goods, passengers and drivers
  • Consignors and consignees
  • Loaders, unloaders and loading managers

Each party has a primary duty to ensure the safety of their transport activities so far as is reasonably practicable. In practice, that means identifying what could go wrong and taking reasonable steps to stop it: unrealistic schedules, overloading, poorly restrained loads, fatigued drivers, unroadworthy trucks.

Executive officers (directors and senior managers) have a separate due diligence duty: keeping up to date with transport safety, understanding the risks in the business, allocating enough resources to manage them, and checking that the controls actually work.

The penalties are serious. The most serious breaches of the primary duty (Category 1, reckless conduct) carry fines in the millions of dollars for companies, and possible imprisonment for individuals. Check the NHVR's current penalty schedule for exact figures.

The 2026 Master Code

In January 2026 the NHVR released the 2026 Master Code, an updated version of the 2018 Master Code. It's a registered industry code of practice: not law in itself, but practical guidance on what can go wrong in heavy vehicle operations and how to prevent it. It's organised around the activities you actually do (scheduling, loading, maintenance and so on), not job titles. It can also be used as evidence of what a reasonable operator knew or ought to have known, so it's worth using as your checklist.

The five areas that cover most of your risk

1. Vehicle standards and maintenance

Roadworthy trucks: daily checks, scheduled servicing, defects fixed and recorded. See our pre-start inspection guide and post-start checks guide.

2. Fatigue

Work and rest limits, work diaries where required, and schedules that don't force drivers to break them, including allowing for realistic loading and waiting times.

3. Speed

Schedules and pay structures that don't encourage speeding. Customer delivery windows that can be met legally.

4. Mass, dimension and loading

Loads within mass limits and dimension limits, and properly restrained. For tray work with steel, formwork and equipment, load restraint is where a lot of the real-world risk sits.

5. Driver fitness and competence

Licensed, trained, fit to drive, and supervised appropriately, now with explicit "unfit to drive" provisions in the amended law.

Records: if it isn't written down, it didn't happen

When something goes wrong, the question is "what reasonable steps did you take?", and the answer is your records. Keep:

  • Daily vehicle checks and how defects were resolved
  • Maintenance and service history for every vehicle
  • Driver records: licences, training, induction, fitness
  • Work and rest records and work diaries
  • Job records: what was booked, who was scheduled, arrive and depart times, proof of delivery
  • Load records: weights, restraint method, loading site
  • Incident and near-miss reports, and what changed as a result

The best records are captured as part of the job, not filled in after the fact.

How TrakkHQ helps with compliance

TrakkHQ captures a lot of this as drivers do their day: pre-shift inspections recorded per truck and driver with PDF export, timestamped arrive and depart times at every stop, GPS route history, proof-of-delivery photos, and timeclock records. When you need to show what happened on a job, it's already in one place.

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FAQ

Does CoR apply to my customers too?
Yes. Consignors, consignees and loading managers are CoR parties. Customers who demand unrealistic delivery times or keep trucks waiting for hours have their own duty to manage those risks.

Is the Master Code mandatory?
No, it's guidance, not law. But following a registered code is one of the clearest ways to show you've taken reasonable steps.

I'm NHVAS accredited. What happens now?
NHVAS is transitioning to the new Heavy Vehicle Accreditation scheme under the amended HVNL. Check the NHVR's implementation pages for your transition timeline.

Sources

This guide is general information, not legal advice. Your obligations depend on your operation. Check the NHVR or get legal advice for your circumstances.