In relation to access to the road network, the two key types of heavy vehicles are General Access Vehicles and Restricted Access Vehicles.
General Access Vehicle
General Access Vehicles (GAV) comply with mass and dimension requirements and do not require a notice or permit to operate on the road network. These vehicles have general access to the road network unless the road is sign-posted otherwise.
Restricted Access Vehicle
Restricted Access Vehicles (RAV) include Class 1, 2 or 3 vehicles that operate under a notice or permit and vehicles operating under higher mass limits (HML) that can generally only access certain parts of the road network (a vehicle that is not a GAV).
Vehicle classes will appear on legal documents such as permits and notices.
The Classes of heavy vehicles fact sheet (PDF, 1.6MB) illustrates some common examples from the 3 different classes of heavy vehicles and is provided for guidance only.
See also the Compliance bulletin 1 – Restricted access vehicles – Compliance and enforcement bulletin (PDF, 355KB) for information regarding requirements for RAVs.