Semi-trailer truck
Combination of a tractor unit and one or more semi-trailers to carry freight / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Semi-truck?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
"Big rig", "Eighteen wheeler", and "Truck and trailer" redirect here. For use of the expression in rugby union, see Glossary of rugby union terms § T. For other uses, see 18 wheeler (disambiguation) and Big Rig (disambiguation).
A semi-trailer truck[1] (also known by a wide variety of other terms - see below) 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 type of hitch called a fifth wheel.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/2/21/Mercedes-Benz_Actros_truck.jpg/640px-Mercedes-Benz_Actros_truck.jpg)
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/a/a5/End_dump_2005-11-28.km.jpg/640px-End_dump_2005-11-28.km.jpg)
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/0/0f/FAW_truck.jpg/640px-FAW_truck.jpg)