Why is it important to select your descent gear before starting down a grade rather than while already on it?

Pick an answer

1. It's required only by company scheduling policy, not for control on the grade itself, since gear choice has no real safety role
2. Gear selection has no real timing requirement
3. Shifting gears, especially downshifting, can be difficult or risky to do smoothly once already moving down a steep grade gaining speed
4. It's only a fuel efficiency consideration

Correct!

Not quite. The correct answer is highlighted.