In 2019 a review of the HVNL (Heavy Vehicle National Law), led by the NCT (National Transport Commission), commenced with the aim to update existing law for improved safety and productivity for the Australian heavy vehicle sector. And on August 1, 2026 the amended HVNL comes into place nationwide. The review identified a number of opportunities to enhance the HVNL’s effectiveness for governments, industry and the broader community. The result is the development of the Heavy Vehicle National Law Amendment Bill 2025 and the Heavy Vehicle National Amendment Regulations 2025 (together, known as the 2025 Amendment Package). There is a lot of information with systems, accreditations and acronym flooding these regulations and laws, so we have tried our best to chunk it down and keep it simple. But remember, this is an amendment, so a lot of this you already know and you just need to understand the changes. What’s changed? We have summed up the key implementation and operational changes into 3 categories: Safety & Operational Reforms Mandatory Safety Management Systems (SMS) The Baseline Expectation: A documented, functional Safety Management System (SMS) is now embedded directly into the core of operations. Audit Readiness: Regulators are shifting away from pure paperwork thoroughness to an assessment framework known as PSOE (Present, Suitable, Operating, and Effective). If an SMS isn’t actively used day-to-day, it fails the standard. Notably, audit findings can be used as evidence in court to show whether an operator took reasonable steps to manage risk. A New Two-Tier Accreditation Framework The long-standing National Heavy Vehicle Accreditation Scheme (NHVAS) is being retired. It is replaced by the Heavy Vehicle Accreditation (HVA) framework, including: General Safety Accreditation (GSA): The new safety baseline required for standard regulatory recognition. Alternative Compliance Accreditation (ACA): A flexible, risk-based tier replacing Basic Fatigue Management (BFM) and Advanced Fatigue Management (AFM). Under a single Alternative Compliance Hours standard, operators with advanced safety protocols can unlock custom hours and route flexibility. Note on Transition: Existing NHVAS holders are not cut off overnight. Although new applicants must use the HVA system from 1 August, existing operators have a transition period of up to three years to move across. Expanded “Unfit to Drive” Duty Beyond Fatigue: The previous duty focused heavily on fatigue impairment. The expanded duty means a driver must not drive, and has the explicit legal right to refuse to drive, if they are unfit for any medical or health reason. This explicitly includes physical illness, temporary injuries, mental health conditions, and the side effects of prescribed medication. Broader Vehicle Scope: While work diary requirements still apply to vehicles over 12 tonnes, this new fitness duty applies to all heavy vehicles over 4.5 tonnes. Businesses and schedulers must actively ensure their practices don’t pressure drivers who report being unfit. Mass, Dimension, and Productivity Gains To reward safer operations and modern fleets, several immediate general access productivity wins are part of the package: Mass Limit Increases: General Mass Limits (GML) are rising to align with previous Concessional Mass Limits (CML), essentially eliminating CML as a separate administrative tier. For most general access combinations, this allows an extra tonne of payload without requiring extra accreditation. Vehicle Length Extension: The general access vehicle length limit for qualifying combinations (like a standard prime-mover-and-semitrailer or rigid-truck-and-trailer) increases from 19 metres to 20 metres. Note: B-Doubles are currently excluded from this extension. Euro VI Steer-Axle Concessions: High-steer axle mass concessions are being expanded to include Euro VI road trains to incentivize lower-emission, modern configurations. Tag Trailer Adjustments: The rigid 1:1 tow-mass ratio requirement for tag trailers is being adjusted to a more flexible maximum of 1:1.3. Revised Penalty Structure The HVNL is adjusting over 70 penalties to align with a risk-based approach: Fewer Minor Fines: Around 21 penalties targeting minor or accidental administrative/paperwork mistakes are being reduced in cost. Steeper Safety Fines: On the contrary, fines for genuine, safety-related Chain of Responsibility (CoR) breaches are increasing sharply. For instance, employers or prime contractors who fail to ensure driver compliance face maximum safety-breach fines jumping up to $10,000. WHA’s Commitment to Supporting Drivers and Businesses. Since 2004, Workforce Health Assessors (WHA) has been a trusted leader in providing occupational health assessment services, including fitness to drive medicals, pre-employment assessments, health monitoring, and related testing services. With a network of 80+ WHA clinics and access to over 300 partner clinics across Australia and New Zealand, WHA offers comprehensive coverage and convenience for businesses and their workforce. We are here to support your business strategy and remain dedicated to meeting your fitness to drive medical program needs. If you have any questions or require further information about the medical fitness changes, please don’t hesitate to get in touch with our team today. For further information on the complete 2025 Amendment Package, please refer to the: Heavy Vehicle National Law (HVNL) Reform Implementation Stay up to date with the latest news on WHA services, locations, achievements as well as industry updates, resources, and more by following us on LinkedIn.