I love running across interesting and surprising things on the net, so when I found this article about road trains on automotiveblogger, I just had to post about it.
Road trains are huge semi trucks pulling anywhere from 3-6 trailers along barren roads. In barren places like central Australia, road trains are a fairly common sight as rail lines are often not an option. Lumbering down miles of flat dirt roads at slow speeds, these road trains can often be quite a hazard to drivers, who find it difficult if not impossible to pass. In Australia, a road train with up to 6 full sized semi-trailers is road legal, while in the United States only 3 (or 2 in some states) are allowed. According to Wikipedia, The Guiness World Record for longest road train clocks in with 104 trailers in Queensland, Australia.
As far as trailer hitches go, the first trailer is obviously attached to the tractor, while each successive trailer is attached to one of a few different dolly setups. The dolly is attached to the rear of the leading trailer, which give the trailing trailer a place to hitch. No word yet on whether anyone is making trailer hitch covers for these beasts.
