Over-running brake

Braking system for trailers. When the towing vehicle breaks the momentum of the trailer is used to apply the trailer brakes via a system of brake rods. Approved for use on trailers with gross weight up to 8 tonnes at maximum speed of 25 km/h or at maximum speed of 40 km/h if brakes are applied to all wheels and approved on trailers without speed limit on trailers up to 3.5 tonnes when all wheels are braked. Only one trailer can be towed in this manner. Two trailers may be towed if the vehicle so built that it cannot exceed 25 km/h and the vehicles have appropriate markings.