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 ...

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 ...

Five years ago, when federal authorities announced that stopping-distance rules for heavy tractors would get stricter, there was talk that this would finally cause a conversion from drum brakes to air ...