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General information

Braking system

The minimum braking system for a trailer depends on the type of trailer, its weight and the weight of the vehicle:

  • 0 – 750 kg loaded weight – no brakes required.
  • 751 – 2000 kg loaded weight – braking on both wheels on at least one axle.
  • 2001– 4500 kg loaded weight – braking on all wheels, and an automatic breakaway system in case the trailer becomes detached from the vehicle.

Brakes must be operable from the driver’s seating position.

Towing coupling

All couplings:

  • Must be strong enough to take the weight of a fully loaded trailer.
  • Should be marked with the manufacturer’s name or trade mark and rated capacity.
  • Must be equipped with a positive locking mechanism. The locking mechanism must be able to be released regardless of the angle of the trailer to the towing vehicle.

Safety chains

  • Must comply with Australian Standards.
  • Trailers less than 2500 kg when loaded must be fitted with at least one safety chain.
  • Trailers over 2500 kg when loaded must be fitted with two safety chains.

To prevent the front end of the drawbar from hitting the ground if the coupling is disconnected,safety chains must be:

  • As short as practicable and connected to the towing vehicle.
  • Crossed over if two chains are fitted.

FAQ

What is the standard ball height?

Between 350mm and 420mm. Ball couplings on towbars are required to be installed so that the height of the centre of the body of the ball coupling is between 350mm and 420mm from the ground when laden (Refer to ADR 62/01).Feb 21, 2020