A combination of vehicles, other than a B-double, consisting of a motor vehicle towing at least two trailers (counting as one trailer a converter dolly supporting a semi-trailer). Australia has the longest and heaviest road-legal road trains in the world, weighing up to 200 tonnes. The Category 3 – (Triple Road Train) has a maximum length of 53.5 metres.
You can find out here the suitable equipment for your road train combination.
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