Add Yahoo as a preferred source to see more of our stories on Google. When the brakes are applied, circuits send compressed air from the storage tanks to front and rear service chambers that push the ...

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 ...

The air brake protects against a runaway train like the one that barreled through the small town of Lac-Megantic, Quebec, on Saturday and derailed, its cargo of crude oil from North Dakota bursting ...