What can help mitigate brake fade during long descents?

Engaging the engine brake is an effective way to mitigate brake fade during long descents. When descending a hill, prolonged use of the foot brake can cause the brake components to overheat, leading to reduced braking performance—a phenomenon known as brake fade. The engine brake, also referred to as exhaust brake in some vehicles, helps slow the vehicle by using the engine's resistance rather than relying solely on the brakes.

By downshifting to a lower gear or utilizing the engine brake system, drivers can utilize the engine's power to help control speed without applying the brake pedals continuously. This method reduces heat buildup in the brake system, which helps maintain effective braking performance throughout the descent, enhancing safety and control.

The other options do not provide the same level of safety or effectiveness when managing brake performance while descending. For instance, using cruise control is not advisable on a descent as it can maintain a constant speed that may lead to over-reliance on the brakes, increasing the risk of brake fade. Overloading the vehicle negatively affects handling and braking efficiency, further exacerbating the issue of brake fade. Lastly, ignoring the speed limit can lead to unsafe conditions, increasing the chances of needing to use the brakes more often and thus contributing to brake fade.