When descending a mountain pass at the wheel of a truck, which gear is advisable to use compared with the one used on the climb?

Question

DentroTest · Accepted Answer

When descending long slopes or mountain passes with a heavy vehicle, it is crucial to maximize engine braking capacity so as not to overload the service brake system. The classic regulatory safety rule establishes that you must descend using the same gear used to climb (or even a lower one if the gradient requires it). In this way, engine braking holds the vehicle back effectively, preventing overheating of the brake shoes or pads and the dreaded loss of braking effectiveness due to thermal fatigue (fading). Using a higher gear or overusing the brake pedal would seriously endanger road safety.

When descending a mountain pass at the wheel of a truck, which gear is advisable to use compared with the one used on the climb?

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