What's the Difference Between a Semi-Truck and a Semi-Trailer?

04 Mar.,2024

 

A lot of names are used interchangeably to refer to a cargo carrying truck. Semi-truck, semi-trailer, tractor-trailer, 18-wheeler, the list goes on. Though everyone understands that you’re referring to a truck when you use any one of these terms, they actually don’t all mean the same thing.

A semi-truck refers to the actual truck, which contains the engine. A semi-truck can run on its own without a trailer, in fact you’ve probably seen semi-trucks on the highway occasionally without a trailer in tow. This brings us to our next term, semi-trailer.

A semi-trailer is hauled by the semi-truck. It has wheels but no front axle and no engine, so it can’t move on its own. The trailer contains the cargo which is being hauled. The semi-truck also supports a lot of the weight of a trailer when the two are attached.

Tractor-trailer and 18-wheeler both refer to the combination of a semi-truck and semi-trailer. Together, they form a tractor-trailer unit, also referred to as an 18-wheeler, owing to the number of wheels present on the unit as a whole.

 

 

Evan Transportation was founded in 1992 by Jerry Wolfarth, who at the time had over 25 years of experience in the trucking and transportation industry. The initial operation consisted of a few trucks and drivers who were dedicated and professional. The goal of the company was to provide excellent, dependable service.

If you need materials and products moved in the Mid-Atlantic region, contact Evan Transportation. We hire professional drivers with excellent driving records, and maintain a fleet of trailers and vehicles that are reliable and ready to roll.

Contact us today for all of your freight shipment needs or call us at 443-673-3365

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Tags: 18 wheeler, semi trailer, semi truck, tractor trailer

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