Some semi trucks use single axles, while others use double or tandem axles. Here are the differences between the two setups and why they matter.

American semi trucks are quite an iconic sight, and not just in their homeland either. While European trucks, or lorries as they can be called in England, have flat fronts, American semi trucks boast ...

Semi-trucks are some of the longest, biggest, and heaviest vehicles on the roads. Semi-trucks -- and here's what "semi" means on a semi-truck-- are wide, averaging 8.5 feet, and can reach 70 to 80 ...

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, ...