Semi trucks are massive pieces of equipment powered by massive diesel engines (not gasoline V8s). They're also designed to haul large loads, with some of these tractors — the front of the truck that ...

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, ...

Plenty of drivers can spot a semi, but far fewer know the engineering detail and naming history that actually set it apart ...