Union Pacific recently announced a landmark agreement with Westinghouse Air Brake Technologies (Wabtec) worth US$1.20 billion to modernize its AC4400 locomotive fleet in the US, extending asset life ...

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 ...

In choosing brake systems for a commercial fleet, there’s no wrong answer whether air disc brakes are a right fit versus drum brakes. There are plenty of advantages for both; drum brakes are ...

Air disc brakes (ADBs) have been proven to deliver advantages on the road, in the service bay, and for a fleet’s bottom line. Their success in heavy-duty applications is driving a continued increase ...

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 ...

Air disc brakes require minimal routine maintenance. Most of the moving parts are internal. Brake pads will often last for the first life of a tractor. Photos: Jim Park Better stopping power is ...