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Modify or construct a vehicle

Change use of heavy vehicle

All heavy vehicles have a nominated heavy vehicle use category (NHVC). This page provides the guidelines on how to change the use of a heavy vehicle.

Individually Constructed Vehicles (ICV)

Find out about Individually Constructed Vehicles (ICV) and street rods.

LPG and other fuels

As petrol prices rise in Western Australia, the use of alternative fuels is expected to grow. Here, you'll find information on alternative fuel options.

Modify a light vehicle: Minor (no inspection)

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

Modify a light vehicle: Simple (inspection)

Certain modifications don't require written pre-approval from DoT and can be assessed by an AIS examiner during inspection.

Modify a light vehicle: Complex (engineering)

Applications must be submitted online unless formal approval isn't required or can be assesssed by an Approved Inspection Station (AIS).

Modify a heavy vehicle

Using an Authorised Modifier can simplify the approval process and make certification more efficient.

Modify a vehicle for people with disability

There are many ways to make transport easier for people with disability.

Vehicle identification numbers (VIN)

A Vehicle Identification Number (VIN) is a unique 17-character code that identifies a vehicle.

Vehicle accessories and fittings

Find information on designing vehicle accessories like warning lamps, airbags, seatbelts, seating, and immobilisers.

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