Tractor-trailer carrying migrants may have been cloned
46 people found dead in tractor-trailer in Texas l GMA
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Tractor-trailer carrying migrants who died may have been 'cloned'
A semi-trailer truck is the combination of a tractor unit and one or more semi-trailers to carry freight. A semi-trailer attaches to the tractor with a fifth wheel coupling (hitch), with much of its weight borne by the tractor. The result is that both the tractor and semi-trailer will have a distinctly different design than a rigid truck and trailer.