Design rules
Australian Design Rules
National standards for vehicle safety, anti-theft and emissions for new vehicles supplied to Australia.
Official towing, trailer, loading, braking, coupling and mass resources — organised by jurisdiction and linked to the authority that issued them.
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.
Design rules
National standards for vehicle safety, anti-theft and emissions for new vehicles supplied to Australia.
Load restraint
Official best-practice load restraint guidance covering loading performance standards, systems and worked examples for road vehicles.
Inspection manuals
Inspection criteria for heavy vehicles. Version 3.1 remains current until 1 August 2026.
Codes of practice
National technical code for construction and modification of light vehicles up to 4.5 tonnes. State and territory approval and registration processes still apply.
Codes of practice
National modification code and certification guidance for heavy vehicles.
Inspection manuals
Version 3.2 becomes effective on 1 August 2026 and is shown in advance so operators can prepare.
TowSmart 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.
TowSmart 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.