Semi-trailers are a key pillar of freight transportation, carrying everything from groceries and furniture to heavy machinery across the country. These giant vehicles help keep the supply chain moving ...

Semi-trucks can come in all shapes and sizes, dictated largely by their intended purpose. Take one of the largest semi-trucks in existence, for example, which is dubbed the 'Red Giant.' This is a ...

If you've ever driven behind a semi-truck on the highway, you've probably noticed the huge, wing-like panels or flaps that extend behind the trailer doors. If you didn't know any better, it would seem ...