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 ...

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 ...

PACCAR Incorporated (PACCAR) is recalling certain 2026 Peterbilt 567 and 589 trucks. The air tanks have an insufficient volume of air for the brake system. As such, these vehicles fail to comply with ...