In general, above what gross vehicle weight must a trailer have brakes fitted?

A trailer must have brakes fitted when it has a gross vehicle weight (GVW) of 750kg or more to ensure safe operation on the roads. This requirement is in place because heavier trailers can pose significant risks if they are unbraked, especially during braking and cornering maneuvers.

The braking system is essential for effectively controlling a trailer, particularly when it is loaded. Brakes help to prevent trailer sway, which can lead to accidents, and also assist the towing vehicle in stopping safely, particularly in adverse weather conditions or hilly terrain. Thus, the regulation regarding the 750kg threshold aims to enhance safety for all road users by mitigating hazards associated with heavier trailers without brakes. This standard is observed to ensure that both the towing vehicle and the trailer operate within safe limits for braking performance.