What Is the Difference Between a Semi-Truck and a Big Rig?

A semi-truck and a big rig are both large trucks used for commercial transportation of goods across the country. While they look similar, there are some key differences that distinguish them from one another.

Size – Semi-trucks are typically smaller than big rigs. Semi-trucks usually measure between 80 and 95 feet in length, while big rigs tend to be longer and can measure up to 125 feet in length. The size difference allows big rigs to carry heavier payloads than semi-trucks.

Cab Design – Big rigs have larger cabs than semi-trucks, with two rows of seating to accommodate two drivers; one in the front and one in the back.

This allows them to travel long distances without needing to stop for breaks as often as semi-trucks do. Semi-trucks, on the other hand, typically only have one row of seating and only accommodate one driver at a time.

Engine Power – Big rigs have powerful engines that allow them to tow heavier loads than semi-trucks can. Big rigs typically have diesel engines with 500 horsepower or more, while semi-trucks usually have less powerful engines with around 300 horsepower.

Cost – The cost of a big rig is usually much higher than a semi-truck because of the larger size and more powerful engine. Semi-trucks can be purchased for around $50,000 while big rigs can cost upwards of $100,000 or more.

In conclusion, a semi-truck is smaller and less powerful than a big rig but also more affordable. Both vehicles are used for commercial transportation of goods across the country but the differences in size, cab design, engine power and cost make them suitable for different purposes.

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Stephen Dunn