- NHVR enforces a single national law (HVNL) across NSW, VIC, QLD, SA, TAS and ACT.
- WA and NT operate under their own state heavy vehicle frameworks.
- Work diaries, mass limits and fatigue rules are the most commonly breached.
- All parties in the chain are responsible — not just the driver.
Who is the NHVR?
The National Heavy Vehicle Regulator (NHVR) is the independent regulator for heavy vehicles over 4.5 tonnes GVM across most of Australia. It administers the Heavy Vehicle National Law (HVNL), runs Safe-T-Cam and on-road compliance, and issues notices and permits for oversize and over-mass movements.
Work diaries and fatigue
Drivers of fatigue-regulated heavy vehicles (over 12 tonnes GVM, or buses over 4.5 tonnes carrying 12+ adults) must record their work and rest times in an NHVR work diary or an approved Electronic Work Diary (EWD).
Standard hours allow up to 12 hours work in 24 with set rest breaks. BFM and AFM operators can extend hours under documented fatigue management plans.
Mass, dimension and loading
Axle and gross mass limits are set by vehicle configuration. Overloading is one of the most common breaches detected at weigh stations and through Safe-T-Cam matching. The load must be restrained to the NTC Load Restraint Guide standard — capable of withstanding 0.8g forwards, 0.5g sideways and rearwards, and 0.2g upwards.
Vehicle standards
All heavy vehicles must meet the Heavy Vehicle (Vehicle Standards) National Regulation. A driver-completed daily pre-start check is the easiest defence against a roadworthy defect — tyres, lights, brakes, coupling, load restraint and bodywork.
On-road interactions
Drivers must comply with NHVR Authorised Officers and police at any time. Penalties are tiered — minor, substantial, severe and critical — with critical breaches attracting court-only fines and potential prison time. Keep your paperwork, work diary and load documentation accessible at all times.