Trailer Regulations & ADR

If you are towing a boat trailer, caravan, camper trailer, box trailer or heavy vehicle trailer Couplemate has you covered.

Got more questions? Give our expert team a call on 07 3348 3822.

ADR/62

Vehicle Standard (Australian Design Rule 62/02 – Mechanical Connections Between Vehicles) 2007

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ADR38/4

Vehicle Standard (Australian Design Rule 38/04 – Trailer Brake Systems) 2013

VSB1-2009

Summarised design and testing construction requirements for trailers that do not exceed 4.5 tonnes aggregate trailer mass.

Regulation: Safety Chains Qld

AIS Information Sheet No. 12(a). Safety chains for trailers up to and including 3.5 tonnes ATM.

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Regulation: Safe Towing Guide

Queensland Government Safe Towing Guide. A guide to towing trailers and caravans and using approved towing equipment.

Regulation: Heavy Vehicle Manual

National Heavy Vehicle Regulator.
Download the National Heavy Vehicle Inspection Manual.

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Boat Trailer Breakaway Switch Wet Weather Troubleshooting Guide

by Stephen Wotherspoon | Oct 23, 2026

Official Safety Notice: Water ingress into the breakaway switch can cause a short circuit in wet weather, resulting in the electric brakes locking on, hot brakes in heavy rain.

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