If you've ever ridden a mountain bike, you'll know that the lower gears help you get up to speed more easily. Conversely, the higher gears help you go faster overall, maintaining that speed. It's the ...

Trucks are the backbone of the modern global economy, traversing the world's longest highways. In America, semi-rigs are a familiar sight on the interstate networks, hauling tens of thousands of tons ...

Diesel engines have undergone several transformations since they debuted in the early 20th century. What started as a reliable power source for industrial machines has evolved into a high-performance ...