Road train

A road train consists of a relatively conventional prime mover, but instead of pulling one trailer or semi-trailer, the road train pulls two or more of them. Road trains can be unwieldy, and driving and maneuvering them safely without unduly obstructing traffic is only possible because of the sparse traffic and extremely flat and straight terrain. Strict regulations also apply regarding licensing and driving experience. The multiple dog-trailers are unhooked, the dollys removed and then connected individually to multiple trucks at "assembly" yards when the road train gets close to populated areas.