When going down a steep slope at the wheel of a heavy truck, in what order must the braking systems be applied?

Question

DentroTest · Accepted Answer

In heavy trucks, prolonged use of the service brake (foot brake) on steep descents generates extreme friction heat in the shoes, pads and discs, which causes the phenomenon of fading (a critical loss of braking effectiveness). To avoid it, the correct technique is to hold the vehicle back primarily with the continuous auxiliary brakes, such as the electric retarder or engine braking, which control speed without mechanical wear or overheating. The service brake must be reserved exclusively as occasional support to correct speed or to make an emergency stop.

When going down a steep slope at the wheel of a heavy truck, in what order must the braking systems be applied?

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