Paccar Inc., one of several manufacturers whose trucks are affected by problems with a Bendix air-brake valve, has issued a recall that includes 21 Kenworth and Peterbilt models. Meanwhile, the other ...

Descending a long downgrade can trigger a runaway even when your brake system is in good working order. Here’s why. The treadle valve, under the pedal, sends only a small air signal. It activates a ...

Most incidents involving total air-brake failures go unreported officially and simply become the stuff of legend. But a few too many of them have resulted in very public collisions. Until recently, ...