Semi-trucks with a gross vehicle weight rating (GVWR) over 33,000 pounds are classified as class 8 vehicles by the Federal Highway Administration. The term semi-truck actually refers to the trailer, ...

Even though we see them almost every day on the roads and highways, it's easy to still be overwhelmed by the gargantuan size of a semi-truck. It may seem odd to consider a machine as massive as a ...

Have you ever wondered why some semi trucks have one set of wheels and others have two sets crammed together? That's because some semis use a single axle while others have tandem axles, but why is it ...