Mass Limits
State and National Road Authorities set weight limits for axle loadings based on design considerations of the roads infrastructure. Vehicles must not exceed the lesser of:
- The manufacturers GVM / GCM
- The maximum statutory axle mass limits for individual axles or axle groups and the sum thereof.
- Manufacturer’s maximum placarded tyre loading.
- The posted weight of a load restricted road or bridge.
Typical examples of combination weight limits
| Axle configuration | Total mass limit (tonnes) |
 |
15 |
 |
22.5 |
 |
42.5 |
Full details are set out in the RTA National Heavy Vehicle Reform brochure “Heavy vehicle mass, loading and access” [RMS catalogue No RMS45070666D 96/99)] available at Roads & Maritime Services or at http://www.rms.nsw.gov.au/
