When the brakes are applied, circuits send compressed air from the storage tanks to front and rear service chambers that push the brake shoes into the brake drums, thus slowing down the vehicle. Semis ...

Cars can last for around 200,000 miles, and many can reach above 300,000. But semi trucks can consistently cross over ...

Among the reasons someone might want to avoid passing a semi-truck is to steer clear of that harsh piercing screech it makes when slowing down. That sound is referred to as brake squeal, and although ...

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 ...

Most modern cars stopped using drum brakes years ago, adopting disc brakes for their improved performance and heat resistance. Those sound like pretty good reasons, so you'd think they'd be just as ...

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 ...