You may have noticed semi trucks with long pieces of metal hanging down toward the ground -- this is a side skirt, and here's ...

Semi-trucks are big vehicles, and it's impossible to see everything going on around it. Knowing where a truck's blind spots ...

But bigger is always better, right, so imagine how satisfying semi truck crash tests could be. In the development of new tractor trailers, manufacturers put their big rigs through similar tests to ...