Why Is It Called A Semi Truck?

Trucks are a common sight on highways and roads. They come in all shapes and sizes, but what is a semi truck?

What makes it so distinctive? We’ll answer this question and look at the history and origins of the semi truck. You might be surprised at how it came to be known as a semi truck and enthralled to learn how this indispensable part of transportation has evolved over the years.

Read on to find out why it’s called a semi truck and discover why it’s one of the most essential vehicles essential on our roads today.

Why is it called a Semi Truck?

A semi truck, also called a semi-trailer truck, tractor-trailer, or big rig, is used to transport goods and materials over long distances. It is a combination of a tractor unit, which is the engine and cab, and a trailer, which carries the goods.

Both the tractor unit and trailer have separate axles and wheels. The tractor unit tows the trailer via a turntable which has fifth wheel, and this is why it is also known as a fifth-wheel truck or articulating lorry.

The Benefits of Semi Trucks

Semi trucks are extremely efficient when it comes to transporting goods over long distances. They can carry large amounts of payloads and reduce the need for multiple vehicles to accomplish the same task. In addition to its efficiency, the semi truck also offers financial advantages.

It is less expensive than using multiple smaller trucks and trailer combinations, since it reduces the need to hire more drivers and vehicles. Semi trucks are also environmentally friendly.

The efficient use of fuel and the quick delivery of goods mean fewer resources are wasted.

Origin of the Name

The term “semi truck” is derived from “semi-trailer” which refers to the fact that the trailer is not directly attached to the tractor unit (which is the engine and cab) but is instead coupled via a turntable.

This is why the truck is also sometimes referred to as a “fifth-wheel truck” or “articulating lorry”. This design feature greatly improves transportation efficiency.


The semi truck is an essential vehicle for transporting goods and materials over long distances.

It offers various advantages, including cost-effectiveness, environmental friendliness, and improved transportation efficiency. The term “semi truck” is derived from “semi-trailer” which refers to the fact that the trailer is not directly attached to the tractor unit. Citation URL: https://en. wikipedia. org/wiki/Semi-trailer_truckhttps://www. thebalancesmb. com/what-is-a-semi-truck-and-how-does-it-work-318895

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