Practice question

What gear should be selected in a heavy commercial vehicle when starting to descend a steep mountain grade?

The highest overdrive gear to descend quickly
The same low gear (or one gear lower) that would be required to climb up that same steep hill, engaging engine retarders before vehicle speed builds up
Neutral gear with the clutch depressed to save fuel
Reverse gear while applying the handbrake

Answer: B — The same low gear (or one gear lower) that would be required to climb up that same steep hill, engaging engine retarders before vehicle speed builds up

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