When a semi truck breaks down on the highway, getting it to safety is nowhere near as straightforward as towing a passenger vehicle. These massive machines weigh anywhere from 35,000 to 80,000 pounds, ...

Take a ride on any major highway around the world, and you're sure to see a familiar sight: armies of semi-trucks zipping by or trudging along, filled with all the things we buy at our favorite shops.

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, ...