Australia has the largest and heaviest road-legal vehicles in the world, with some configurations topping out at close to 200 tonnes. The majority are between 80 and 120 t. Double (two-trailer) road train combinations are allowed in most areas of Australia, and within the environs many cities. A double road train should not be confused with a B-double, which are allowed access to most of the country and in all major cities. Triple (three trailer) road trains operate as well, with some states also allowing AB-Quads (3.5 trailers). Darwin is the only capital city in the world that triples and quads are allowed to within 1 km (0.62 mi) of the central business district (CBD).
In the remote areas can be found the largest road trains operating in Australia, and therefore the world. Called a “Powertrain” or a “Body and six”, these machines operate at the Granites gold mine in the western Northern Territory, and are used in place of 200t dump trucks, because of the distances involved on the haul run.. These have 6 trailers hooked to the prime mover. [detailed info from Wikipedia]
Here is a 90 tonne double from Queensland photographed in the Outback on the way to Broken Hill, NSW, Australia.
Canon 5D MkII, Canon 16-35 F2.8L Lens.