Defensive Driving Practice Exam 2026 – Complete All-in-One Guide for Fast, Easy, and Affordable Success!

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What is the purpose of downshifting to a lower gear on a long downhill?

To disengage the transmission.

To use engine braking to reduce brake load and help prevent fade.

Downshifting on a long downhill uses engine braking to control speed and protect the brakes. As you descend, gravity tends to make you speed up, and relying only on the foot brakes can heat them up and lead to brake fade, where braking power drops. Shifting to a lower gear makes the engine resist the wheels more, adding braking force without extra pedal effort. This keeps your speed steady, improves control, and helps prevent overheating the brakes on a long descent. It doesn’t trigger ABS, and it won’t make you accelerate; it’s about using the engine’s resistance to slow you down. Use smooth, appropriate downshifts to avoid engine overrev or harsh shifts.

To activate ABS.

To accelerate more quickly.