Driver's License Test Prep
Illinois Practice Defensive Driving

Your vehicle begins to skid while hydroplaning in the rain. You cannot regain control of the wheel. What does the manual say to do?

  1. A.
    Downshift and accelerate through the standing water.
  2. B.
    Release the accelerator and ride out the skid. Correct
  3. C.
    Press the brake pedal firmly until the tires grip.
  4. D.
    Steer sharply the opposite way and hold the wheel steady.
The Why

The answer is "Release the accelerator and ride out the skid."

When a hydroplaning skid takes over and you can't recover the wheel, the manual says to release the accelerator and ride out the skid. Choice C is the trap because reaching for the brake feels instinctive when a car stops responding to the wheel, and a driver acting on that panic reflex presses tires already floating on water into a film that can't slow them.

Why the others miss

The traps in the wrong answers

A. Downshift and accelerate through the standing water.

Adding power keeps the tires floating and lengthens the skid. This answer borrows a mud-and-sand technique from off-road driving, where accelerating tires through loose material can help them find grip on firmer ground below.

C. Press the brake pedal firmly until the tires grip.

Braking on a water film keeps the tires from making contact with the pavement, which is why the manual says to release the accelerator instead. This answer reaches for the brake as a panic reflex when the wheel stops responding, treating hydroplaning like a dry-road emergency stop where the pedal can still do work.

D. Steer sharply the opposite way and hold the wheel steady.

Sharp countersteering worsens the skid; the manual's instruction here is to ease off the gas. This answer applies the counter-steer instinct from dry-road oversteer recovery, ignoring that tires floating on water can't act on any steering input.

The Rule

This question tests your knowledge of Defensive Driving in Illinois. Source: Illinois Rules of the Road, "Chapter 11: Safe Driving Tips, Weather Conditions, Rain," p.85..

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