Oct. 22—A semi-truck trailer rolled and struck the guardrail on U.S. Highway 12 in Lewis County Monday, Oct. 20, according to a press memo from the Washington State Patrol. The driver of the truck, ...

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 ...

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 ...

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 ...