(1) The total mass limit for a trailer, including any load, being towed by a light motor vehicle is the lowest of the following—
(a) the capacity of the towing apparatus fitted to the motor vehicle;
(b) the maximum trailer mass specified by the light motor vehicle's manufacturer for trailers that may be towed by the light motor vehicle;
(c) the GVM of the trailer.
(2) If the manufacturer of a light motor vehicle has not specified a maximum trailer mass for trailers that may be towed by the light motor vehicle, or it cannot be identified, the following is to be taken to be the light motor vehicle manufacturer's limit for the purposes of subregulation (1)—
(a) if the trailer is fitted with brakes, one and half times the unladen mass of the motor vehicle; or
(b) if the trailer is not fitted
with brakes, the unladen mass of the motor vehicle.