Have you ever tried to back up an 18-wheeler? It's no small feat, but once you understand how air brakes in semi trucks work, it all starts to make sense.

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 ...

As much as I enjoy driving tractor-trailers, one thing that has irked me for many years is the parking brake valves on the dashboard. The two push-pull valves -- the yellow one for tractor brakes and ...

Air brake systems are made up of many separate parts, all of which must be in good condition to provide reliable operation. Inspections catch problems early. In addition to visual driver inspections, ...

Work is underway on a long-overdue TMC Recommended Practices document addressing excessive applied stroke in S-cam brakes – a problem too often incorrectly addressed by adjusting the automatic brake ...

Modern vehicles tend to come equipped with more technologically advanced safety features than some owners are even aware of. While many of those systems can be pricey to repair when they malfunction, ...

In my 50 years of experience as an ASE and General Motors master technician and automotive technology instructor, I’ve found ...

To this day, people still argue over how exactly you should use the parking brake on hills. Should you put it in neutral first or just go straight to park?