Modify a light vehicle

Find out what modifications you can undertake to a light vehicle in Western Australia without approval from the Department, and what to do when approval is required.

  Modifications that DO NOT require approval or inspection

Many minor vehicle modifications can be carried out without specific approval, as long as they comply with the applicable legislation.

Modifications that do not require approval include:

  • Additional lighting.
  • Air conditioners.
  • Air shock absorbers.
  • Alarm systems.
  • Badge bars.
  • Body markings and speed striping.
  • Change of vehicle colour.
  • Mesh stone shields for wind screens and lamps.
  • Mud spats and pebble guards.
  • Optional manufacturer seating.
  • Radio and stereo systems.
  • Rear-view mirrors.
  • Roof racks.
  • Seat belts for pre-1969 cars (no full harness types).
  • Single tone air horns.
  • Stabiliser bars.
  • Sun visors.
  • Torque rods and traction bars (not semi-tramp types).
  • Tyre size and aspect ratio.
  • Venetian blinds and other internal screening systems are allowed, subject to a clear view to the rear.
LBU_VS_IB_132.pdf icon IB-132C: Fitment and use of additional and optional vehicle lights (lamps) (Information Bulletin) Kb

  Modifications that require a vehicle inspection

The following modifications do not need written pre-approval from the DoT and can be assessed by an Authorised Inspection Station (AIS) vehicle examiner at time of the inspection. A Modification Permit will be issued by the AIS approving your particular modification

Before you book with AIS to have your modified vehicle inspected, the following must be completed:

  • You must pre-pay for the modification permit before you present the vehicle for inspection.
  • You must present your receipt at the time of the inspection.
  • You must present the checklists relevant to the specific modifications as noted below at the time of the inspection.

Modifications requiring VSB14 checklists must be completed by suitably qualified persons, usually a qualified mechanic with a Department of Commerce Repairers Certificate.

Modifications not listed below may require prior approval from the DoT Vehicle Safety and Standards section. Further information is available at; Modifications that require Engineering Certification

Opens in a new window Department of Infrastructure, Regional Development and Cities: Vehicle Standards Bulletin 14 (VSB14)

  Body and interior, seat, modifications

  • Installation of Category 2 or 3 child seats. (LK1 checklist required)
  • Installation of Child restraint anchorage points (not fitted by a DoT Type 2 Fitting Station). (LK6 checklist required)
  • Seating reduction seat and seat belt removal. (LK1 checklist required)

The following National Code of Practice VSB14 checklists must be supplied at time of inspection. The checklists must be completed and signed by the holder of a Motor Vehicle Repairers Certificate or a DoT recognised signatory.

  • LK1 checklist: Seat and seatbelt installation/removal.
  • LK6 checklist: Child restraint anchorage installation.

The checklists may be found on the Department of Infrastructure and Regional Development: Vehicle Standards Bulletins (VSB) website.

LBU_VS_IB_118.pdf icon IB-118H: Child restraint fitting stations - Type 2 (Information Bulletin) Kb
Opens in a new window Department of Infrastructure, Regional Development and Cities: Vehicle Standards Bulletin 14 (VSB14)

  Brake system modifications

Modifications to the braking system of a motor vehicle are permissible only where listed by the vehicle manufacturer as an option for the particular model. However, the fitting of a suitable power booster unit to a brake system is in order where it is an option listed by the vehicle manufacturer.

The following National Code of Practice VSB14 details the requirements of fitting substitute brake systems;

  • Section LG - Brakes.

VSB14 may be found on the Department of Infrastructure, Regional Development and Cities: Vehicle Standards Bulletins (VSB) website.

Opens in a new window Department of Infrastructure, Regional Development and Cities: Vehicle Standards Bulletin 14 (VSB14)

  Driveline modifications

  • Gearbox change - Manual to Automatic manufacturer's option provided all the manufacturers' option components are used.
  • Rear Axle substitution - Manufacturer's option provided all the manufacturers' option components are used

The following National Code of Practice VSB14 checklists must be supplied at time of inspection. The checklists must be completed and signed by the holder of a Motor Vehicle Repairers Certificate or a DoT recognised signatory.

  • LB1: Transmission substitution checklist.
  • LB2: Rear axle substitution checklist.

The checklists may be found on the Department of Infrastructure and Regional Development: Vehicle Standards Bulletins (VSB) website.

Opens in a new window Department of Infrastructure, Regional Development and Cities: Vehicle Standards Bulletin 14 (VSB14)

  Electrical modifications

  • Battery relocation.

  Engine modifications

  • Fitment of a manufacturer's option engine provided all the manufacturers' option components are used. (LA1 checklist required)
  • Fitment of aftermarket extractors.
  • Fitment of aftermarket turbo charges to OEM turbo diesel with mechanical pumps only. (LA1 checklist required)
  • Fitment of intercooler.
  • Fitment of over the radiator air intake without emissions control removed.
  • Fitment of pod air filter.

The following National Code of Practice VSB14 checklist must be supplied at time of inspection, where relevant. The checklists must be completed and signed by the holder of a Motor Vehicle Repairers Certificate or a DoT recognised signatory.

  • LA1- Equivalent Engine Installation checklist.

The checklists may be found on the Department of Infrastructure and Regional Development: Vehicle Standards Bulletins (VSB) website.

Opens in a new window Department of Infrastructure, Regional Development and Cities: Vehicle Standards Bulletin 14 (VSB14)

  Fuel system modifications

  • Fitment of aftermarket fuel tanks. (LM1 checklist required)

The following National Code of Practice VSB14 checklists must be supplied at time of inspection. The checklists must be completed and signed by the holder of a Motor Vehicle Repairers Certificate or a DoT recognised signatory.

  • LM1: Fuel tank alterations checklist.

The checklists may be found on the Department of Infrastructure and Regional Development: Vehicle Standards Bulletins (VSB) website.

  • Installation of Liquefied Petroleum Gas (LPG) Fuel Systems and Gas Containers.

The Gas Standards (Gas fitting and Consumer Gas Installations) Regulations 1999 require automotive LPG installations to comply with the requirements of Australian/New Zealand Standard AS/NZS 1425 LP Gas fuel systems for vehicle engines.

By law, any installation, servicing or repair work to the LP gas system must be carried out by an auto gas fitter who is appropriately licensed by Energy Safety.

Once a vehicle LPG system and gas container has been installed and certified by an appropriately certified person, the vehicle is required to be inspected by an Authorised Inspection Station (AIS)

Opens in a new window Department of Infrastructure, Regional Development and Cities: Vehicle Standards Bulletin 14 (VSB14)
Opens in a new window Department of Mines, Industry Regulation and Safety: Auto LP gas safety

  Steering modifications

  • Aftermarket steering wheel marked as complying with Australian design Rule 10/00 (pre-airbag and minimum size 330 mm).
  • Basic steering wheel spinner knob without any controls (for persons with disabilities only).

  Suspension modifications

  • Fitment of adjustable coil over suspension, provided suspension travel is not reduced by more than one third of the manufacturer's specifications. The brake lines and ABS sensor wires must be securely attached.
  • Fitment of Air Assist Airbag suspension as per IB-126.
  • Lowering or raising a vehicle height (total roof height) by suspension springs only within 50 mm of manufacturer's specifications.
LBU_VS_IB_126.pdf icon IB-126B: Air bag suspension (Information Bulletin) Kb

  Modifications that require Engineering Certification

The Department of Transport's (DoT) Vehicle Safety and Standards (VSS) is required to assess applications from people wishing to perform a modification on a vehicle that requires the approval of the Chief Executive Officer (CEO) of the DoT.

As part of this process applicants are required to complete an online application, unless the modification is one that has been gazetted as a modification not requiring formal approval or a modification that can be assessed by an Approved Inspection Station (AIS)

LBU_P_VL_Online_Mod_Application_Light_vehicles_notes.pdf icon Modification application light (production) vehicles (Guidelines) Kb

  Engineering or modification reports, certificates and certification

Engineering and recognised signatories

The document below provides a list of persons who are recognised by the Department as able to issue engineering or modification reports or certificates for vehicles modified by themselves or under their personal supervision.

LBU_VS_IB_102.pdf icon IB-102R: Engineering and recognised signatories (Information Bulletin) Kb

  Light vehicle modification application form

Questions marked as   are mandatory.

Owner's details

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Original manufacturer's vehicle specification

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Important: You must complete the following sections related to the vehicle modifications you wish to undertake. Failure to complete the relevant sections may mean your application cannot be assessed.

Engine and driveline

Engine

 
 

Transmission

 
 
 
 
 

Differential

 
 

Exhaust system

 
 
 

Suspension, wheels and tyres

Vehicle height

 
 

Front suspension

 
 
 

Rear Suspension

 
 
 

Front tyres

Note: Original manufacturer's tyre and rim sizes are listed on the vehicles tyre placard or in the owner's manual.
 
 
 

Rear tyres

Note: Original manufacturer's tyre and rim sizes are listed on the vehicles tyre placard or in the owner's manual.
 
 

Front wheel rims

Note: Original manufacturer's tyre and rim sizes are listed on the vehicles tyre placard or in the owner's manual.
 
 
 

Rear wheel rims

Note: Original manufacturer's tyre and rim sizes are listed on the vehicles tyre placard or in the owner's manual.
 
 
 

Wheel track

 
 
 
 
 
 

Steering

 
 
 

Brakes

 
 
 

Body, chassis, seating and lighting

Chassis

 
 
 

Seating

 
 

Seatbelts

 
 
 
 

Body

 
 
 

Lighting

 
 
 

Other modifications

 
 

Who will be performing these modifications




 
 
 

Authorisation

This section must be completed by the owner of the vehicle or the agent applying on behalf of the owner of the vehicle.
 

Vehicle owner authorisation

 
 
 

Security

 
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Once you submit the form an automatic email will be sent to your email address with a receipt number and a copy of your submission for your records attached.

 
 
 
 

  Applicable legislation and related documents (modify a light vehicle)

Whatever the reason for a modification, the vehicle in question must conform to the following regulations and rules.

  • Australian Design Rules.
  • Road Traffic (Vehicles) Act 2012.
  • Road Traffic (Vehicles) Regulations 2014.

Many minor vehicle modifications can be carried out without our approval. However, they must still comply with the relevant regulations.

LBU_VS_CI_112.pdf icon CI-112C: Bull bar construction guidelines (Circular to Industry) Kb
LBU_VS_CI_109.pdf icon CI-109C: Guidelines for seat belt repairers (Circular to Industry) Kb
LBU_VS_IB_110.pdf icon IB-110F: Seat belt repairers - Accepted organisations (Information Bulletin) Kb
LBU_VS_IB_113.pdf icon IB-113B: Seat belt replacement (Information Bulletin) Kb
LBU_F_VL_E7_SelfBuiltVehicleDec.pdf icon Self-built vehicle declaration (Form E7) Kb
External Link Department of Infrastructure, Regional Development and Cities: Australian Design Rules
Opens in a new window Department of Justice: Road Traffic (Vehicles) Act 2012

 

Page last updated: Fri Sep 7 2018 2:46:32 PM