Mountain Driving 101: Understanding signs, and using an AMT

Some grades have signs that display a profile of the hill; some signage offers ambiguous warnings like, “Use Lower Gear” or “Slow Down,” but lower than what or how slow? We break down what the signs mean and explain how they can help you on a long grade. We also explain the correct use of an automated transmission and the engine brake to maintain a safe downhill speed.

Read more about the art and science of driving a truck in the mountains.