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Heavy Vehicle Mod Plates (VSB6), Brisbane
Heavy vehicles are anything over 4.5 tonnes GVM: trucks, prime movers, trailers and buses. Modifications to these are certified under the national code VSB6 and regulated by the National Heavy Vehicle Regulator.
Mobile inspections are available at your yard or body builder’s workshop. Every certification is signed off by an RPEQ engineer.
Codes we certify
| Code | What it covers | Details |
|---|---|---|
| A1 to A5 | Engine substitution, air cleaners, turbochargers, exhaust changes, road speed limiters | Ask → |
| B1, C1 | Transmission substitution, tail shaft alterations | Ask → |
| D1 to D3 | Rear axles, differentials, non-standard rear wheel components | Ask → |
| E1 to E3 | Front axles, steering alterations, non-standard front wheel components | Ask → |
| F1, F2 | Suspension substitution, trailer suspension | Ask → |
| G1 to G8 | Brake systems: air brake components, trailer brakes, endurance brakes, wheelbase-extension brake changes | Ask → |
| H1 to H5 | Wheelbase extensions and reductions, chassis alterations, trailer chassis | H Chassis → |
| J1 to J4 | Body mounting, truck-bus bodies, roll-over and falling object protection, tipper bodies | J Body Mounting → |
| K1 to K6 | Seating and seatbelt changes, anchorages, cabin conversions, wheelchair and child restraints | K Cabin and Seating → |
| M1 | Fuel system alterations | Ask → |
| P1, P2 | Towbars and couplings; fifth wheels and kingpins | P1 Towbars → |
| R1, R2 | Vehicle-mounted cranes and lifting systems, wheelchair loaders | Ask → |
| S1 to S13 | GVM and GCM re-rating, trailer ATM/GTM, road train and B-double ratings, bus ratings | S Vehicle Rating → |
| S10 | Concessional livestock loading (Queensland only) | S Vehicle Rating → |
| T1, T2 | Tow truck construction and design | Ask → |
What to send for a quote
- Rego, VIN and compliance plate photos
- Body builder’s drawings or the design package, if there is one
- Photos of the work and a list of changes
We’ll confirm the codes and give you a fixed quote.
Need a mod plate?
Send your rego, VIN, photos and a list of changes. We’ll confirm the codes and give you a fixed quote, usually within a business day. Mobile across Greater Brisbane. A travel fee may apply further out.