What Is the Trailer of a Semi Truck Called?

A trailer of a semi truck is often referred to as a semi-trailer, and is an unpowered vehicle towed by a powered truck, typically known as the tractor. The term “semi” refers to the fact that the trailer is only semi-permanently attached to the tractor, with the ability to be removed when necessary. This makes it easier for drivers to move multiple trailers at once and allows for greater flexibility in goods transportation.

Typically, semi-trailers are made from lightweight materials such as aluminium or steel that can easily be moved from one location to another. They are also designed to be aerodynamic in order to reduce drag and increase overall fuel efficiency. This allows for cheaper transportation costs for companies that rely on transport of goods over long distances.

The most common types of trailers available are flatbeds, dry vans, reefers, tankers and tippers. Flatbeds allow for easy loading and unloading and can carry large amounts of goods at once while dry vans are enclosed containers used mostly for smaller items that need protection from harsh weather conditions.

Reefers are refrigerated containers used mostly for transporting food while tankers are designed to carry liquids such as gas or oil. Finally, tippers are used mainly in construction sites and can dump large amounts of material all at once.

The trailer of a semi truck can be attached in two different ways: with a fifth wheel coupling system or with a drawbar coupling system. The fifth wheel coupling system uses a turntable located above the rear axle on the tractor, which attaches onto a kingpin located on top of the trailer. The drawbar coupling system uses an A-frame assembly located on the back of the tractor which slots into an eye on the rear end of the trailer.

Conclusion:

In conclusion, what is referred to as ‘the trailer of a semi truck’ is often known as a semi-trailer – an unpowered vehicle towed by a powered truck (tractor). Semi-trailers come in various forms including flatbeds, dry vans, reefers, tankers and tippers and they can be attached either via fifth wheel coupling or drawbar coupling systems. In this way they provide increased flexibility in goods transportation while helping companies save money on fuel costs.

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Stephen Dunn