Glossary
The heavy-vehicle & telematics glossary
Plain-English answers to 'what is…' — the compliance, fatigue, mass, tax and telematics terms every Australian fleet runs into.
Compliance
National Heavy Vehicle Accreditation SchemeNHVASNHVAS is Australia's national accreditation scheme for heavy-vehicle operators, covering Mass, Maintenance and Fatigue management. It is being progressively replaced by the Heavy Vehicle Accreditation (HVA) scheme from 1 August 2026.Heavy Vehicle AccreditationHVAHVA is the new heavy-vehicle accreditation scheme that replaces NHVAS from 1 August 2026. It uses a two-tier framework — General Safety Accreditation (GSA) and Alternative Compliance Accreditation (ACA) — assessed with the PSOE audit model.General Safety AccreditationGSAGSA is the mandatory baseline tier of HVA, based on a whole-of-business Safety Management System (SMS) audit against five categories. GSA on its own carries no concessions and is a prerequisite for Alternative Compliance Accreditation.Alternative Compliance AccreditationACAACA is the optional tier of HVA that provides Mass and Fatigue concessions. It requires General Safety Accreditation (GSA) first, and merges the former BFM and AFM fatigue schemes.Present, Suitable, Operating, EffectivePSOEPSOE is the audit model used under HVA's National Audit Standard. Each safety control is assessed against four tests — is it Present, Suitable, Operating and Effective — which makes digital, time-stamped evidence the practical proof base.Chain of ResponsibilityCoRChain of Responsibility makes everyone in the transport supply chain — not just the driver — legally accountable for heavy-vehicle safety. Evidence of due diligence (records, monitoring, corrective action) is central to CoR compliance.National Heavy Vehicle RegulatorNHVRThe NHVR is Australia's national regulator for heavy vehicles over 4.5 tonnes, administering the Heavy Vehicle National Law, accreditation (NHVAS today, HVA from 1 August 2026) and Chain of Responsibility.Heavy Vehicle National LawHVNLThe HVNL is the national law governing heavy vehicles in most Australian states and territories. An updated HVNL takes effect alongside the HVA scheme on 1 August 2026.
Fatigue
Alternative Compliance HoursACHACH is the new performance-based fatigue-hours option under HVA's fatigue ACA, replacing the prescriptive BFM/AFM hours model with an outcomes-based approach.Electronic Work DiaryEWDAn Electronic Work Diary is an NHVR-approved electronic alternative to the written work diary for recording a driver's work and rest hours, supporting fatigue compliance.Basic Fatigue ManagementBFMBFM was an NHVAS fatigue-management option allowing extended driving hours under set conditions. Under HVA it is effectively merged into fatigue ACA.Advanced Fatigue ManagementAFMAFM was the most flexible NHVAS fatigue option, trading greater flexibility for stronger risk management. Under HVA it is effectively merged into fatigue ACA.
Mass
Mass ManagementMass management is the NHVAS/HVA discipline of recording and controlling vehicle mass — gross and axle-group weights — to stay within limits and access mass concessions. Weighbridge dockets and axle records are the core evidence.Performance-Based StandardsPBSPerformance-Based Standards approve innovative heavy-vehicle combinations against safety and infrastructure performance outcomes, rather than prescriptive dimension limits — often enabling higher productivity.Higher Mass LimitsHMLHigher Mass Limits allow accredited operators to carry greater mass than general limits on approved routes, in exchange for accreditation and monitoring obligations.
Safety
Safety Management SystemSMSA Safety Management System is the documented, whole-of-business system HVA's GSA audits against the Safety Management System Standard 2026. It has five categories: Leadership and Commitment; Risk Management; People; Safety Systems; and Assurance, Monitoring and Improvement.Safe Work Method StatementSWMSA SWMS is a document that identifies high-risk work, the hazards involved and the control measures — a core piece of Risk Management evidence for both WHS and HVA safety systems.Job Safety AnalysisJSAA Job Safety Analysis breaks a task into steps, identifies the hazard at each step and defines controls — used alongside SWMS to manage operational risk.
Telematics
Advanced Driver Assistance SystemsADASADAS uses road-facing cameras and sensors to warn drivers of forward-collision and lane-departure risks in real time, reducing at-fault incidents.Driver State MonitoringDSMDSM uses a driver-facing AI camera to detect fatigue, distraction and phone use, alerting the driver and enabling coaching before an incident occurs.Firmware Over-The-AirFOTAFOTA lets you update device firmware remotely across a whole fleet, without a workshop visit — keeping a mixed-hardware estate current and secure.TelematicsTelematics is the technology that captures and transmits vehicle data — location, distance, behaviour and diagnostics — from in-vehicle hardware to a platform, where it feeds tracking, safety, compliance and fuel-tax-credit calculations.
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