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.

Spending a few hundred bucks on a dedicated semi-truck GPS might sound like overkill, especially when your phone already tells you where to go for free. But before you shrug it off, picture this: ...

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, ...