Which of the following is NOT recommended for brake use on steep downgrades?

Using full braking power at all times is not recommended for brake use on steep downgrades because it can lead to brake overheating and decreased braking effectiveness. When a driver continuously applies maximum braking force, the brakes can heat up rapidly, which might result in brake fade—a condition where the brakes lose their stopping power due to excessive heat. Instead, it is advisable to use a combination of techniques, including engine braking and smooth, gradual brake application, to maintain control of the vehicle while also preventing damage to the braking system. Shifting to lower gears is also a critical practice, as it enhances engine braking by allowing the engine to help slow the vehicle down, which reduces the reliance on brakes alone and helps maintain a safe speed during the descent.