Modification Plates
All vehicles modified in Queensland must receive approval for the modifications from the Queensland Department of Transport. This process ensures that modifications have been completed to an acceptable standard ensuring that the modified vehicle will continue to operate safely.
To streamline the approval process for vehicle modifications approvals, the Authorised Officer Scheme was introduced.
Authorised officers are suitably qualified and experienced persons from private industry who are authorised by the Minister of Transport to issue approvals for certain types of vehicle modifications and to perform certain vehicle certification procedures on behalf of the Queensland Department of Transport.
There are two Authorised Officer Schemes, the Commercial Vehicle Modification Scheme and the Light Vehicle Modification Scheme.
There are circumstances where modifications are outside of the scope of the guidelines. The process to be considered for approval is to submit the information to Queensland Transport and Main Roads. If the modificaiton is permitted they will issue you with a letter of approval that you can then present to the Modification Plate issuer.
Modification Codes for Light Vehicles
LA1 Equivalent Engine Installation
LA2 Performance Engine Installation
LA3 Supercharger/Turbocharger Installation
LA4 Engine Modification
LB1 Transmission Substitution
LG2 Brake System Conversion
LH2 Roof Conversion
LH4 Modified Wheelbase Conversion
LH6 Vehicle Construction
LH7 Body/Chassis Variants Conversion
LH11 Campervan/motorhome Conversion
LK1 Seat and Seatbelt Installation/Removal
LK6 Child Restraint Anchorage Installation
LK8 Construction and Installation of one-off rollbars and roll-cages by individuals
LK10 Installation of aftermarket rollbars, roll-cages and ROPS
LM1 Fuel Tank Alteration
LS2 LHD Vehicle Steering Conversion
LS4 Front Suspension and Steering Modification
LS6 Rear Suspension Modification
LT4 Noise Test
Q1 Installation of Truck Mounted Lifting System
R1 Goods loading device Installation
R2 Wheel Chair landing Installation
S1 GVM/GCM Rating
S10 Concessional Livestock Loading
S6 Omnibus Licensing Evaluation
S7 ATM Rating for Trailers
T1 Construction of Tow Truck
Modifcation Codes For Heavy Vehicles
A1 Engine Substitution
A2 Air Cleaner Substitution or Additional Fittings
A3 Turbocharger Installation
A4 Exhaust System Alteration
A5 Road Speed Limiter Installation
C1 Tail shaft Alterations
D1 Rear Axle Installation
D2 Differential Substitution
E1 Front Axle Installation
F1 Suspension Substitution
F2 Trailer Suspension Modification
G1 Air Brake System – Repositioning of Controls, Valves and pipework
G2 Fitting of Trailer Brake Connections and Controls on Prime Movers
G3 Trailer Brake System Upgrade
G5 Auxiliary Brake Installation
G6 Air Operated Accessories
G7 Brake System Substitution
H1 Wheelbase Extension Outside the 1st Manufacturers Option
H2 Wheelbase Reduction Less than 1st Manufactures Option
H3 Wheelbase Extension or Reduction within 1st Manufactures Option
H4 Chassis Frame Alteration (other than change in wheelbase)
H5 Trailer Chassis Frame Modification
J1 Mounting of Body- Vehicles greater than 4.5 tonnes GVM
K1 Seating Capacity Alteration and Seat Belt Alteration
K3 Cabin Conversion- Construction of Through Loader
K5 Wheelchair Restraint Installation
K6 Child Restraint Installation
M1 Fuel Tank Repositioning or Additional Fittings
P1 Tow Coupling Installation- Vehicle greater than 4.5 tonnes GVM
P2 Fifth Wheel and King Pin Installation
LC2 Dual-controls for driver trainer vehicles(modification)
LC4 Vehicle controls for persons with a disability
LS10 High Lift- 50mm to 125mm (modification)
For all information in relation to Modification Codes and the requirements to meet the standard for a Modification Plate to be issued click on the links below.
Light Vehicles:
Heavy Vehicles:
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