What is the difference between a Semi-Trailer and a Tractor-Trailer?
What is the difference between a Semi-Trailer and a Tractor-Trailer? It's a common question, but the answer could be more satisfying. Before answering this question, let's look at how these two types of trucks are defined and the substantial differences between them. Defining Semi-Trailer and Tractor-Trailer First, let's briefly define semi-trailers and tractor-trailers. A Semi-Trailer is a truck whose trailer is partially attached to the rear of a tractor-trailer, not directly, but through a hitch. Conversely, a tractor-trailer is a type of truck in which the trailer portion is attached directly to the rear of the tractor, forming a complete single vehicle. The Structural Difference The most obvious difference between a semi-trailer and a tractor-trailer is their structure. The trailer section of the semi-trailer is only connected to the rear of the tractor rather than via a full connecting bridge. This design allows the semi-trailer to be more flexible and steer around