What does S3-4 require?

Vehicle mass is established before every departure in a way that reliably confirms compliance with the applicable axle and gross mass limits, through an objective approach to loading rather than estimates, assumptions or informal habit. Before a loaded vehicle or combination sets off, its mass is either measured directly or assessed by a method giving equivalent assurance; the system allows for foreseeable variation in the load (density, volume, quantity, distribution) so that such variation cannot produce an exceedance, and compliance is controlled at the point where the risk is created, before departure, rather than discovered afterwards, through loading practices that are structured, repeatable and able to demonstrate that limits are not exceeded in normal operation. Five things are looked for: mass is determined before departure by a method giving objective assurance of compliance with axle and gross mass limits; loading decisions follow defined, repeatable methods rather than estimates or informal judgement; the method allows for foreseeable variation in load density, volume, quantity or distribution; vehicles do not start a trip until mass compliance is confirmed; and enough records of regulatory non-conformance concerning vehicle suspension are kept to identify, review and manage suspension-related mass risk.

Australia Heavy Vehicle National Law Safety Management...

Other controls in Schedule 3 Alternative compliance accreditation, mass (requirements 2 to 9) – Australia Heavy Vehicle National Law Safety Management System Standard 2026

S3-2 ACA mass, responsibility and accountability: mass management responsibilities allocated across management, operation and verification, leadership visibility of mass risks such as overload incidents and equipment failure, responsibilities actively discharged with governance visibility of compliance outcomes, and leadership oversight of workforce capability for mass tasks
S3-3 ACA mass, vehicle identification and capability: all vehicles and trailers under the accreditation identifiable at any time, current documented details including subcontractor vehicles sufficient for audit, information showing identity, configuration and applicability of mass concessions or authorisations, vehicles demonstrably capable of operating within axle and gross mass limits, current network access authorisations, and controls securing subcontractor vehicles to the operator's accreditation
S3-5 ACA mass, suspension maintenance: suspension systems on all relevant vehicles including trailers and third-party vehicles maintained to appropriate technical standards and specifications, suspension faults identified, reported, prioritised and repaired to manage mass risk, work by suitably qualified or supervised persons, oversight and sign-off of maintenance decisions, and evidence that third-party vehicles meet the standard before operating under the accreditation
S3-6 ACA mass, verification: the accuracy of mass assessment methods periodically confirmed against certified or calibrated means producing auditable evidence, or, where periodic re-weighing is not relied on, demonstration that loading controls consistently ensure axle and gross mass compliance for every load and trip, with verification sufficient for confidence in the mass management system
S3-7 ACA mass, training and competence: persons with mass responsibilities understand the policies, procedures and instructions for their roles and why they exist, training appropriate to responsibilities and mass risks, evidence that training was delivered and competence maintained as systems or conditions change, and training that supports consistent application of mass controls
S3-8 ACA mass, review and continuous improvement: monitoring of weighbridge, onboard scale and load plan variance data to confirm consistent control, pattern detection prompting changes to loading instructions or calibration, corrective action at underlying causes rather than blaming loaders, reviews at intervals appropriate to risk and scale including quarterly oversight and annual assessment, demonstrated effectiveness of changes, and documented communicated procedure changes
S3-9 ACA mass, evidence: trip logs, weighbridge dockets or load plans credibly reflecting actual mass determinations and showing compliance for trips above general mass limits, evidence identifying the vehicles and the mass determination method per trip, current information on vehicles and personnel with mass responsibilities (integrable with existing records), evidence of action on mass defects and infringements, and documentation accessible and understandable to those who need it

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MCP endpoint All Australia Heavy Vehicle National Law Safety Management System Standard 2026 controls