What is the method of controlling speed on a steep grade?

The most effective method of controlling speed on a steep grade is to use snubbing the brakes. This technique involves intermittently applying the brakes to reduce speed without overheating the brake system. On steep grades, continuous braking can lead to brake fade, which significantly reduces braking effectiveness due to excessive heat buildup. Snubbing allows for energy dissipation through braking while letting the vehicle maintain some momentum. This way, the brakes do not overheat, and the driver retains better control over speed, leading to a safer descent.

Coasting down may seem like a tempting option, but it poses dangers as the vehicle can gather excessive speed without any control mechanism. Cutting off the engine also isn’t advisable because it can complicate steering and braking, making it harder to control the vehicle. Thus, snubbing the brakes is the preferred and safest method to manage speed effectively while descending steep grades.