Towed Mass

Depending on the trailer/implement brake system, the following masses and speeds are permitted:

Trailer/implement brake system	Maximum permissible towed mass	Maximum speed
- unbraked..............	3000 kg (6615 lb.)	25 km/h (15.5 mph)
- independent..............	5000 kg (11025 lb.)	25 km/h (15.5 mph)
- overrun brake..............	8000 kg (17635 lb.)	25 km/h (15.5 mph)
- hydraulic brake..............	35000 kg (77160 lb.)	25 km/h (15.5 mph)
- single-line air brake..............	35000 kg (77160 lb.)	25 km/h (15.5 mph)
- dual-line air brake..............	35000 kg (77160 lb.)	Max. design speed

There may be legal limits in force that restrict the maximum towed mass and/or travel speeds to figures lower than those quoted here.