Paccar may not be a household name for those unfamiliar with semi-trucks, but the Bellevue, Washington-based company is a major player in the heavy truck industry. Formerly known as the Pacific Car ...

Semi trucks continue to rely on drum brakes as their primary braking system due to their reliability under heavy loads. This practice is not only seen in commercial vehicle engineering but also in ...

Semi trucks, though they get little recognition, or even respect, for that matter, are holding America together. These rigs, often called 18-wheelers, can last millions of miles, and are concentrated ...

Cummins is a renowned builder of diesel engines for pickup and semi-trucks, and it's in the latter where you might also find some of its transmissions. While older semi-trucks tended to have manual ...