TrailerWise rules & compliance

The official rules for building, registering and keeping a trailer roadworthy.

Authoritative trailer construction, registration, inspection, towing and modification resources from national and jurisdiction authorities.

Build a guided check Search all rules How updates work

AUS 4 sources ACT 1 sources NSW 4 sources VIC 3 sources QLD 3 sources SA 4 sources WA 3 sources TAS 2 sources NT 3 sources

Official regulatory sources

Find the official rule that applies.

Choose a jurisdiction first. National technical codes do not replace state and territory approval, inspection or registration requirements.

3 official resources

Downloads open on the issuing authority’s website.

WA Current

Ordinary vehicle modification rules

Western Australia IB-134 — Light Vehicle Modification Standards

Western Australian modification categories, applicable standards and inspection requirements for light vehicles.

Car Utes & light trucks Motorcycle Trailers 4wd

Issued by: Western Australian Department of Transport and Major Infrastructure
Version: IB-134
Source check: 28 Jul 2026

Download official PDF Authority page

WA Current

Towing rules

Western Australia Safe Towing Guide

Official Western Australian guide to trailer mass, brakes, couplings, safety chains, speed and roadworthy towing combinations.

Car Utes & light trucks Trailers 4wd

Issued by: Western Australian Department of Transport and Major Infrastructure
Source check: 28 Jul 2026

Download official PDF Authority page

WA Current

Roadworthy requirements

Western Australia vehicle inspections

Official Western Australian requirements for vehicle examinations and roadworthiness.

Car Utes & light trucks Heavy Vehicle Motorcycle Trailers 4wd

Issued by: Western Australian Department of Transport and Major Infrastructure
Source check: 28 Jul 2026

View official rules

Current means checked

A living source register, not a forgotten links page.

TrailerWise 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.

01
Monitor
Check official authority pages and downloads daily.
02
Detect
Compare source fingerprints, versions and effective dates.
03
Review
Hold changed material back until a person verifies it.
04
Publish
Restore the verified official link with a clear current status.

Important:

TrailerWise 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.