What is the difference between full trailer and semi-trailer?
2 Answers
The differences between full trailer and semi-trailer are as follows: 1. Different connection methods with the tractor: A full trailer bears all the load by itself and is connected to the tractor only by a hook. The tractor does not need to bear the trailer load but only provides traction; A semi-trailer, in addition to providing support points and power, the tractor also needs to bear part of the trailer load. 2. Different standing methods: A full trailer can stand upright by its own tires, and the entire load is borne by the trailer itself, connected to the main vehicle only by a hook. The main vehicle does not need to bear the trailer load but only provides power to achieve traction and steering of the full trailer; A semi-trailer must rely on the front legs, and the semi-trailer is developed on the basis of the full trailer. The front half of the semi-trailer is placed on the traction saddle at the rear of the tractor, and the bridge behind the tractor bears part of the weight of the trailer.
I've been in the trucking industry for over twenty years, driving both semi-trailers and full trailers, and the differences are quite noticeable. A semi-trailer is the kind of big truck you drive, where the front of the trailer rests on the fifth wheel of the tractor, with part of the weight on the towing vehicle, making it easier to reverse and turn, and more stable to handle. A full trailer, on the other hand, is independently suspended with connection points at both the front and rear, like one vehicle pulling another. It has a smaller turning radius, but starting and reversing require extra caution, especially for beginners, as it's prone to fishtailing. In terms of operation, semi-trailers are more hassle-free on highways, while full trailers are better suited for short distances or narrow urban roads, though they consume slightly more fuel. Remember, the choice depends on the purpose; for long-haul freight, I prefer semi-trailers for their higher efficiency.