Over the past week, two trucks crashed as a result of their inability to stop on hills. In both cases, the mainstream media reported that the trucks' brakes had failed. That illustrates what the ...

Modern diesel engines perform exceptionally well at 1,100 to 1,200 rpm. They deliver peak torque just a few hundred rpm above idle, and peak horsepower somewhere around 1,500 or 1,600 rpm. But what ...

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 ...

Many of the larger vehicles on our roads have one intriguing thing in common: They can make sudden, loud, gas-escaping hissing noises. These noises, admittedly, have made this writer jump — on more ...

Modern trucks come equipped with advanced technologies, yet many still rely on drum brakes, a design that has been around for more than a century. Drum brakes remain widely used in the trucking ...

Last year’s Commercial Vehicle Safety Alliance’s (CVSA) International Roadcheck took over 2,000 trucks off the road because of light issues. Brake lamp failures, a common problem that’s easy for ...

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 ...