Which aspect of driving is crucial in mountainous areas?

Understanding the use of engine brakes and maintaining control on gradients is critically important when driving in mountainous areas due to the unique challenges presented by steep terrain. Engine brakes, also known as compression release brakes, help increase vehicle control by using engine resistance to slow down the vehicle without over-reliance on the brakes. This is particularly beneficial on long descents where brakes can overheat, leading to reduced effectiveness and potential brake failure.

In mountainous driving, maintaining control on gradients ensures safe navigation through sharp turns and steep slopes. Drivers must manage their speed effectively to prevent accidents and ensure the safety of themselves, their passengers, and others on the road. Thus, knowledge and application of engine brakes are essential skills for safely navigating mountainous regions, making it the most relevant aspect of driving in such environments.