All trailers and towing dollies (car dollies) must have brakes on all wheels when their GVW (trailer/dolly and load) exceeds 1,400 kg (3,086 pounds). Every trailer with brakes must have a breakaway device hooked to the trailer brake system.
Surge brakes must be used when towing a vehicle that has a gross vehicle weight (GVW) of up to and including 2,800 kg (6,173 pounds).
From 2,800 kilograms and up the towed vehicle brakes must be able to be applied by the driver of the tow vehicle.