Ordinary vehicle modification rules
Western Australia IB-134 — Light Vehicle Modification Standards
Western Australian modification categories, applicable standards and inspection requirements for light vehicles.
Official caravan, motorhome, camper trailer, towing, loading, roadworthy and modification resources — organised by jurisdiction for Australian travellers.
Choose a jurisdiction first. National technical codes do not replace state and territory approval, inspection or registration requirements.
Downloads open on the issuing authority’s website.
Ordinary vehicle modification rules
Western Australian modification categories, applicable standards and inspection requirements for light vehicles.
Towing rules
Official Western Australian guide to trailer mass, brakes, couplings, safety chains, speed and roadworthy towing combinations.
Roadworthy requirements
Official Western Australian requirements for vehicle examinations and roadworthiness.
VanAssist fingerprints each official page or document on a schedule. When its bytes change, the affected record leaves the public library until the new version, effective date and plain-language description have been reviewed.
Check official authority pages and downloads daily.
Compare source fingerprints, versions and effective dates.
Hold changed material back until a person verifies it.
Restore the verified official link with a clear current status.
VanAssist provides access to official sources and general navigation help. It does not provide legal advice, engineering certification, a roadworthy certificate or approval to modify a vehicle. Requirements depend on the vehicle, manufacture date, intended modification and jurisdiction. The issuing authority’s current material always governs.